Cannot Pull Private Repository Using Docker For Mac Os
Docker Pull From Private Registry
Estimated reading time: 35 minutes
The Registry configuration is based on a YAML file, detailed below. While itcomes with sane default values out of the box, you should review it exhaustivelybefore moving your systems to production. Override specific configuration options
CPUs: By default, Docker Desktop is set to use half the number of processors available on the host machine. To increase processing power, set this to a higher number; to decrease, lower the number. Memory: By default, Docker Desktop is set to use 2 GB runtime memory, allocated from the total available memory on your Mac. To increase the RAM. Unless youre paying extra for the private repositories, pushing equals publishing. When working on some clusters, each time you launch a job that uses a Docker container it pulls the container from Docker Hub, and if you are running many jobs, this can be really slow. Pull the official Nginx image. First, pull the public Nginx image to your local computer. Docker pull nginx Run the container locally. Execute following docker run command to start a local instance of the Nginx container interactively (-it) on port 8080.The -rm argument specifies that the container should be removed when you stop it. Docker run -it -rm -p 8080:80 nginx. One of the things that makes Docker so useful is how easy it is to pull ready-to-use images from a central location, Dockers Central Registry.It is just as easy to push your own image (or collection of tagged images as a repository) to the same public registry so that everyone can benefit from your newly Dockerized service.
In a typical setup where you run your Registry from the official image, you canspecify a configuration variable from the environment by passing -e argumentsto your docker run stanza or from within a Dockerfile using the ENV instruction.
To override a configuration option, create an environment variable named REGISTRY_variable where variable is the name of the configuration optionand the _ (underscore) represents indention levels. For example, you canconfigure the rootdirectory of the filesystem storage backend:
To override this value, set an environment variable like this:
This variable overrides the /var/lib/registry value to the /somewhere directory.
Note : Create a base configuration file with environment variables that canbe configured to tweak individual values. Overriding configuration sectionswith environment variables is not recommended. Overriding the entire configuration file
If the default configuration is not a sound basis for your usage, or if you arehaving issues overriding keys from the environment, you can specify an alternateYAML configuration file by mounting it as a volume in the container.
Typically, create a new configuration file from scratch,named config.yml , thenspecify it in the docker run command:
Use thisexample YAML fileas a starting point. List of configuration options
These are all configuration options for the registry. Some options in the listare mutually exclusive. Read the detailed reference information about eachoption before finalizing your configuration. Uplink developer cd zip files .
In some instances a configuration option is optional but it contains childoptions marked as required . In these cases, you can omit the parent withall its children. However, if the parent is included, you must also include allthe children marked required . version
The version option is required . It specifies the configurations version.It is expected to remain a top-level field, to allow for a consistent versioncheck before parsing the remainder of the configuration file. log
The log subsection configures the behavior of the logging system. The loggingsystem outputs everything to stdout. You can adjust the granularity and formatwith this configuration section. Parameter Required Description level no Sets the sensitivity of logging output. Permitted values are error , warn , info , and debug . The default is info . formatter no This selects the format of logging output. The format primarily affects how keyed attributes for a log line are encoded. Options are text , json , and logstash . The default is text . fields no A map of field names to values. These are added to every log line for the context. This is useful for identifying log messages source after being mixed in other systems. accesslog
Within log , accesslog configures the behavior of the access loggingsystem. By default, the access logging system outputs to stdout inCombined Log Format.Access logging can be disabled by setting the boolean flag disabled to true . hooks
The hooks subsection configures the logging hooks behavior. This subsectionincludes a sequence handler which you can use for sending mail, for example.Refer to loglevel to configure the level of messages printed. loglevel
DEPRECATED: Please use log instead.
Permitted values are error , warn , info and debug . The default is info . storage
The storage option is required and defines which storage backend is inuse. You must configure exactly one backend. If you configure more, the registryreturns an error. You can choose any of these backend storage drivers: Storage driver Description filesystem Uses the local disk to store registry files. It is ideal for development and may be appropriate for some small-scale production applications. See the drivers reference documentation. azure Uses Microsoft Azure Blob Storage. See the drivers reference documentation. gcs Uses Google Cloud Storage. See the drivers reference documentation. s3 Uses Amazon Simple Storage Service (S3) and compatible Storage Services. See the drivers reference documentation. swift Uses Openstack Swift object storage. See the drivers reference documentation. oss Uses Aliyun OSS for object storage. See the drivers reference documentation.
For testing only, you can use the inmemory storagedriver.If you would like to run a registry from volatile memory, use the filesystem driveron a ramdisk.
If you are deploying a registry on Windows, a Windows volume mounted from thehost is not recommended. Instead, you can use a S3 or Azure backingdata-store. If you do use a Windows volume, the length of the PATH tothe mount point must be within the MAX_PATH limits (typically 255 characters),or this error will occur: maintenance
Currently, upload purging and read-only mode are the only maintenance functions available. uploadpurging
Upload purging is a background process that periodically removes orphaned filesfrom the upload directories of the registry. Upload purging is enabled bydefault. To configure upload directory purging, the following parameters mustbe set. Parameter Required Description enabled yes Set to true to enable upload purging. Defaults to true . age yes Upload directories which are older than this age will be deleted.Defaults to 168h (1 week). interval yes The interval between upload directory purging. Defaults to 24h . dryrun yes Set dryrun to true to obtain a summary of what directories will be deleted. Defaults to false .
Note : age and interval are strings containing a number with optionalfraction and a unit suffix. Some examples: 45m , 2h10m , 168h . readonly
If the readonly section under maintenance has enabled set to true ,clients will not be allowed to write to the registry. This mode is useful totemporarily prevent writes to the backend storage so a garbage collection passcan be run. Before running garbage collection, the registry should berestarted with readonlys enabled set to true. After the garbage collectionpass finishes, the registry may be restarted again, this time with readonly removed from the configuration (or set to false). delete
Use the delete structure to enable the deletion of image blobs and manifestsby digest. It defaults to false, but it can be enabled by writing the followingon the configuration file: cache
Use the cache structure to enable caching of data accessed in the storagebackend. Currently, the only available cache provides fast access to layermetadata, which uses the blobdescriptor field if configured.
You can set blobdescriptor field to redis or inmemory . If set to redis ,aRedis pool caches layer metadata. If set to inmemory , an in-memory map cacheslayer metadata.
NOTE : Formerly, blobdescriptor was known as layerinfo . While theseare equivalent, layerinfo has been deprecated. redirect
The redirect subsection provides configuration for managing redirects fromcontent backends. For backends that support it, redirecting is enabled bydefault. In certain deployment scenarios, you may decide to route all datathrough the Registry, rather than redirecting to the backend. This may be moreefficient when using a backend that is not co-located or when a registryinstance is aggressively caching.
To disable redirects, add a single flag disable , set to true under the redirect section: auth
The auth option is optional . Possible auth providers include:
[ none ]
You can configure only one authentication provider. silly
The silly authentication provider is only appropriate for development. It simply checksfor the existence of the Authorization header in the HTTP request. It does notcheck the headers value. If the header does not exist, the silly authresponds with a challenge response, echoing back the realm, service, and scopefor which access was denied.
The following values are used to configure the response: Parameter Required Description realm yes The realm in which the registry server authenticates. service yes The service being authenticated. token
Token-based authentication allows you to decouple the authentication system fromthe registry. It is an established authentication paradigm with a high degree ofsecurity. Parameter Required Description realm yes The realm in which the registry server authenticates. service yes The service being authenticated. issuer yes The name of the token issuer. The issuer inserts this into the token so it must match the value configured for the issuer. rootcertbundle yes The absolute path to the root certificate bundle. This bundle contains the public part of the certificates used to sign authentication tokens. autoredirect no When set to true , realm will automatically be set using the Host header of the request as the domain and a path of /auth/token/
For more information about Token based authentication configuration, see thespecification. htpasswd
The htpasswd authentication backed allows you to configure basicauthentication using anApache htpasswd file.The only supported password format is bcrypt . Entries with other hash typesare ignored. The htpasswd file is loaded once, at startup. If the file isinvalid, the registry will display an error and will not start.
Warning : If the htpasswd file is missing, the file will be created and provisioned with a default user and automatically generated password.The password will be printed to stdout.
Warning : Only use the htpasswd authentication scheme with TLSconfigured, since basic authentication sends passwords as part of the HTTPheader. Parameter Required Description realm yes The realm in which the registry server authenticates. path yes The path to the htpasswd file to load at startup. Cannot Pull Private Repository Using Docker For Mac Os middleware
The middleware structure is optional . Use this option to inject middleware atnamed hook points. Each middleware must implement the same interface as theobject it is wrapping. For instance, a registry middleware must implement the distribution.Namespace interface, while a repository middleware must implement distribution.Repository , and a storage middleware must implement driver.StorageDriver .
This is an example configuration of the cloudfront middleware, a storagemiddleware:
Each middleware entry has name and options entries. The name mustcorrespond to the name under which the middleware registers itself. The options field is a map that details custom configuration required toinitialize the middleware. It is treated as a map[string]interface . As such,it supports any interesting structures desired, leaving it up to the middlewareinitialization function to best determine how to handle the specificinterpretation of the options. cloudfront Parameter Required Description baseurl yes The SCHEME://HOST[/PATH] at which Cloudfront is served. privatekey yes The private key for Cloudfront, provided by AWS. keypairid yes The key pair ID provided by AWS. duration no An integer and unit for the duration of the Cloudfront session. Valid time units are ns , us (or s ), ms , s , m , or h . For example, 3000s is valid, but 3000 s is not. If you do not specify a duration or you specify an integer without a time unit, the duration defaults to 20m (20 minutes). ipfilteredby no A string with the following value none , aws or awsregion . awsregion no A comma separated string of AWS regions, only available when ipfilteredby is awsregion . For example, us-east-1, us-west-2 updatefrenquency no The frequency to update AWS IP regions, default: 12h iprangesurl no The URL contains the AWS IP ranges information, default: https://ip-ranges.amazonaws.com/ip-ranges.json
Value of ipfilteredby can be: Value Description none default, do not filter by IP aws IP from AWS goes to S3 directly awsregion IP from certain AWS regions goes to S3 directly, use together with awsregion . redirect
You can use the redirect storage middleware to specify a custom URL to alocation of a proxy for the layer stored by the S3 storage driver. Parameter Required Description baseurl yes SCHEME://HOST at which layers are served. Can also contain port. For example, https://example.com:5443 . reporting
The reporting option is optional and configures error and metricsreporting tools. At the moment only two services are supported:
A valid configuration may contain both. bugsnag Parameter Required Description apikey yes The API Key provided by Bugsnag. releasestage no Tracks where the registry is deployed, using a string like production , staging , or development . endpoint no The enterprise Bugsnag endpoint. newrelic Parameter Required Description licensekey yes License key provided by New Relic. name no New Relic application name. verbose no Set to true to enable New Relic debugging output on stdout . http
The http option details the configuration for the HTTP server that hosts theregistry. Parameter Required Description addr yes The address for which the server should accept connections. The form depends on a network type (see the net option). Use HOST:PORT for TCP and FILE for a UNIX socket. net no The network used to create a listening socket. Known networks are unix and tcp . prefix no If the server does not run at the root path, set this to the value of the prefix. The root path is the section before v2 . It requires both preceding and trailing slashes, such as in the example /path/ . host no A fully-qualified URL for an externally-reachable address for the registry. If present, it is used when creating generated URLs. Otherwise, these URLs are derived from client requests. secret no A random piece of data used to sign state that may be stored with the client to protect against tampering. For production environments you should generate a random piece of data using a cryptographically secure random generator. If you omit the secret, the registry will automatically generate a secret when it starts. If you are building a cluster of registries behind a load balancer, you MUST ensure the secret is the same for all registries. relativeurls no If true , the registry returns relative URLs in Location headers. The client is responsible for resolving the correct URL. This option is not compatible with Docker 1.7 and earlier. draintimeout no Amount of time to wait for HTTP connections to drain before shutting down after registry receives SIGTERM signal tls
The tls structure within http is optional . Use this to configure TLSfor the server. If you already have a web server running onthe same host as the registry, you may prefer to configure TLS on that web serverand proxy connections to the registry server. Parameter Required Description certificate yes Absolute path to the x509 certificate file. key yes Absolute path to the x509 private key file. clientcas no An array of absolute paths to x509 CA files. letsencrypt
The letsencrypt structure within tls is optional . Use this to configureTLS certificates provided byLets Encrypt.
NOTE : When using Lets Encrypt, ensure that the outward-facing address isaccessible on port 443 . The registry defaults to listening on port 5000 .If you run the registry as a container, consider adding the flag -p 443:5000 to the docker run command or using a similar setting in a cloudconfiguration. You should also set the hosts option to the list of hostnamesthat are valid for this registry to avoid trying to get certificates for randomhostnames due to malicious clients connecting with bogus SNI hostnames. Parameter Required Description cachefile yes Absolute path to a file where the Lets Encrypt agent can cache data. email yes The email address used to register with Lets Encrypt. hosts no The hostnames allowed for Lets Encrypt certificates. debug
The debug option is optional . Use it to configure a debug server thatcan be helpful in diagnosing problems. The debug endpoint can be used formonitoring registry metrics and health, as well as profiling. Sensitiveinformation may be available via the debug endpoint. Please be certain thataccess to the debug endpoint is locked down in a production environment.
The debug section takes a single required addr parameter, which specifiesthe HOST:PORT on which the debug server should accept connections. prometheus
The prometheus option defines whether the prometheus metrics is enable, as wellas the path to access the metrics. Parameter Required Description enabled no Set true to enable the prometheus server path no The path to access the metrics, /metrics by default
The url to access the metrics is HOST:PORT/path , where HOST:PORT is definedin addr under debug . headers
The headers option is optional . Use it to specify headers that the HTTPserver should include in responses. This can be used for security headers suchas Strict-Transport-Security .
The headers option should contain an option for each header to include, wherethe parameter name is the headers name, and the parameter value a list of theheaders payload values.
Including X-Content-Type-Options: [nosniff] is recommended, so that browserswill not interpret content as HTML if they are directed to load a page from theregistry. This header is included in the example configuration file. http2
The http2 structure within http is optional . Use this to control http2settings for the registry. Parameter Required Description disabled no If true , then http2 support is disabled. notifications
The notifications option is optional and currently may contain a singleoption, endpoints . endpoints
The endpoints structure contains a list of named services (URLs) that canaccept event notifications. Parameter Required Description name yes A human-readable name for the service. disabled no If true , notifications are disabled for the service. url yes The URL to which events should be published. headers yes A list of static headers to add to each request. Each headers name is a key beneath headers , and each value is a list of payloads for that header name. Values must always be lists. timeout yes A value for the HTTP timeout. A positive integer and an optional suffix indicating the unit of time, which may be ns , us , ms , s , m , or h . If you omit the unit of time, ns is used. threshold yes An integer specifying how long to wait before backing off a failure. backoff yes How long the system backs off before retrying after a failure. A positive integer and an optional suffix indicating the unit of time, which may be ns , us , ms , s , m , or h . If you omit the unit of time, ns is used. ignoredmediatypes no A list of target media types to ignore. Events with these target media types are not published to the endpoint. ignore no Events with these mediatypes or actions are not published to the endpoint. ignore
Parameter Required Description ---------------------------------------------------------------------------- mediatypes no A list of target media types to ignore. Events with these target media types are not published to the endpoint. actions no A list of actions to ignore. Events with these actions are not published to the endpoint. events
The events structure configures the information provided in event notifications. Parameter Required Description includereferences no If true , include reference information in manifest events. redis
Declare parameters for constructing the redis connections. Registry instancesmay use the Redis instance for several applications. Currently, it cachesinformation about immutable blobs. Most of the redis options controlhow the registry connects to the redis instance. You can control the poolsbehavior with the pool subsection.
You should configure Redis with the allkeys-lru eviction policy, because theregistry does not set an expiration value on keys. Parameter Required Description addr yes The address (host and port) of the Redis instance. password no A password used to authenticate to the Redis instance. db no The name of the database to use for each connection. dialtimeout no The timeout for connecting to the Redis instance. readtimeout no The timeout for reading from the Redis instance. writetimeout no The timeout for writing to the Redis instance. pool
Use these settings to configure the behavior of the Redis connection pool. Parameter Required Description maxidle no The maximum number of idle connections in the pool. maxactive no The maximum number of connections which can be open before blocking a connection request. idletimeout no How long to wait before closing inactive connections. health
The health option is optional , and contains preferences for a periodichealth check on the storage drivers backend storage, as well as optionalperiodic checks on local files, HTTP URIs, and/or TCP servers. The results ofthe health checks are available at the /debug/health endpoint on the debugHTTP server if the debug HTTP server is enabled (see http section). storagedriver
The storagedriver structure contains options for a health check on theconfigured storage drivers backend storage. The health check is only activewhen enabled is set to true . Parameter Required Description enabled yes Set to true to enable storage driver health checks or false to disable them. interval no How long to wait between repetitions of the storage driver health check. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . Defaults to 10s if the value is omitted. If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. threshold no A positive integer which represents the number of times the check must fail before the state is marked as unhealthy. If not specified, a single failure marks the state as unhealthy. Docker Pull From Private Registry file
The file structure includes a list of paths to be periodically checked for theexistence of a file. If a file exists at the given path, the health check willfail. You can use this mechanism to bring a registry out of rotation by creatinga file. Parameter Required Description file yes The path to check for existence of a file. interval no How long to wait before repeating the check. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . Defaults to 10s if the value is omitted. If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. http
The http structure includes a list of HTTP URIs to periodically check with HEAD requests. If a HEAD request does not complete or returns an unexpectedstatus code, the health check will fail. Parameter Required Description uri yes The URI to check. headers no Static headers to add to each request. Each headers name is a key beneath headers , and each value is a list of payloads for that header name. Values must always be lists. statuscode no The expected status code from the HTTP URI. Defaults to 200 . timeout no How long to wait before timing out the HTTP request. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. interval no How long to wait before repeating the check. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . Defaults to 10s if the value is omitted. If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. threshold no The number of times the check must fail before the state is marked as unhealthy. If this field is not specified, a single failure marks the state as unhealthy. tcp
The tcp structure includes a list of TCP addresses to periodically check usingTCP connection attempts. Addresses must include port numbers. If a connectionattempt fails, the health check will fail. Parameter Required Description addr yes The TCP address and port to connect to. timeout no How long to wait before timing out the TCP connection. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. interval no How long to wait between repetitions of the check. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . Defaults to 10s if the value is omitted. If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. threshold no The number of times the check must fail before the state is marked as unhealthy. If this field is not specified, a single failure marks the state as unhealthy. proxy
The proxy structure allows a registry to be configured as a pull-through cacheto Docker Hub. Seemirrorfor more information. Pushing to a registry configured as a pull-through cacheis unsupported. Parameter Required Description remoteurl yes The URL for the repository on Docker Hub. username no The username registered with Docker Hub which has access to the repository. password no The password used to authenticate to Docker Hub using the username specified in username .
To enable pulling private repositories (e.g. batman/robin ) specify theusername (such as batman ) and the password for that username.
Note : These private repositories are stored in the proxy caches storage.Take appropriate measures to protect access to the proxy cache. compatibility
Use the compatibility structure to configure handling of older and deprecatedfeatures. Each subsection defines such a feature with configurable behavior. schema1 Parameter Required Description signingkeyfile no The signing private key used to add signatures to schema1 manifests. If no signing key is provided, a new ECDSA key is generated when the registry starts. enabled no If this is not set to true, schema1 manifests cannot be pushed. validation disabled
The disabled flag disables the other options in the validation section. They are enabled by default. This option deprecates the enabled flag. manifests
Use the manifests subsection to configure validation of manifests. If disabled is false , the validation allows nothing. urls
The allow and deny options are each a list ofregular expressions that restrict the URLs inpushed manifests.
If allow is unset, pushing a manifest containing URLs fails.
If allow is set, pushing a manifest succeeds only if all URLs matchone of the allow regular expressions and one of the following holds:
deny is unset.
deny is set but no URLs within the manifest match any of the deny regularexpressions. Example: Development configuration
You can use this simple example for local development:
This example configures the registry instance to run on port 5000 , binding to localhost , with the debug server enabled. Registry data is stored in the /var/lib/registry directory. Logging is set to debug mode, which is the mostverbose.
Seeconfig-example.ymlfor another simple configuration. Both examples are generally useful for localdevelopment. Example: Middleware configuration
This example configures Amazon Cloudfrontas the storage middleware in a registry. Middleware allows the registry to servelayers via a content delivery network (CDN). This reduces requests to thestorage layer.
Cloudfront requires the S3 storage driver.
This is the configuration expressed in YAML:
See the configuration reference for Cloudfront for moreinformation about configuration options.
Note : Cloudfront keys exist separately from other AWS keys. Seethe documentation on AWS credentialsfor more information. registry, on-prem, images, tags, repository, distribution, configuration
Estimated reading time: 11 minutes
The Docker Dashboard provides a simple interface that enables you to manage your containers, applications, and images directly from your machine without having to use the CLI to perform core actions.
The Containers/Apps view provides a runtime view of all your containers and applications. It allows you to interact with containers and applications, and manage the lifecycle of your applications directly from your machine. This view also provides an intuitive interface to perform common actions to inspect, interact with, and manage your Docker objects including containers and Docker Compose-based applications.
The Images view displays a list of your Docker images, and allows you to run an image as a container, pull the latest version of an image from Docker Hub, and inspect images. It also displays a summary of the vulnerability scanning report using Snyk. In addition, the Images view contains clean up options to remove unwanted images from the disk to reclaim space. If you are logged in, you can also see the images you and your organization have shared on Docker Hub.
In addition, the Docker Dashboard allows you to:
Easily navigate to the Preferences ( Settings in Windows) menu to configure Docker Desktop preferences
Access the Troubleshoot menu to debug and perform restart operations
Sign into Docker Hub using your Docker ID
To access the Docker Dashboard, from the Docker menu, select Dashboard . On Windows, click the Docker icon to open the Dashboard. Explore running containers and applications
From the Docker menu, select Dashboard . This lists all your running containers and applications. You must have running or stopped containers and applications to see them listed on the Docker Dashboard.
The following sections guide you through the process of creating a sample Redis container and a sample application to demonstrate the core functionalities in Docker Dashboard. Start a Redis container
To start a Redis container, open your preferred CLI and run the following command:
docker run -dt redis
This creates a new Redis container. From the Docker menu, select Dashboard to see the new Redis container. Start a sample application
Lets start a sample application. Download the Example voting app from the Docker samples page. The example voting app is a distributed application that runs across multiple Docker containers. The app contains:
A front-end web app in Python or ASP.NET Core which lets you vote between two options
A Redis or NATS queue which collects new votes
A .NET Core, Java or .NET Core 2.1 worker which consumes votes and stores them
A Postgres or TiDB database backed by a Docker volume
A Node.js or ASP.NET Core SignalR web app which shows the results of the voting in real time
To start the application, navigate to the directory containing the example voting application in the CLI and run docker-compose up --build .
When the application starts successfully, from the Docker menu, select Dashboard to see the Example voting application. Expand the application to see the containers running inside the application.
Now that you can see the list of running containers and applications on the Dashboard, let us explore some of the actions you can perform:
Click Port to open the port exposed by the container in a browser.
Click CLI to open a terminal and run commands on the container.
Click Stop , Start , Restart , or Delete to perform lifecycle operations on the container.
Use the Search option to search for a specific object. You can also sort your containers and applications using various options. Click the Sort by drop-down to see a list of available options. Interact with containers and applications
From the Docker Dashboard, select the example voting application we started earlier.
The Containers/Apps view lists all the containers running on the application and contains a detailed logs view. It also allows you to start, stop, or delete the application. Use the Search option at the bottom of the logs view to search application logs for specific events, or select the Copy icon to copy the logs to your clipboard.
Click Open in Visual Studio Code to open the application to open the application in VS Code. Hover over the list of containers to see some of the core actions you can perform. Container view
Click on a specific container for detailed information about the container. The container view displays Logs , Inspect , and Stats tabs and provides quick action buttons to perform various actions.
Select Logs to see logs from the container. You can also search the logs for specific events and copy the logs to your clipboard.
Select Inspect to view low-level information about the container. You can see the local path, version number of the image, SHA-256, port mapping, and other details.
Select Stats to view information about the container resource utilization. You can see the amount of CPU, disk I/O, memory, and network I/O used by the container.
You can also use the quick action buttons on the top bar to perform common actions such as opening a CLI to run commands in a container, and perform lifecycle operations such as stop, start, restart, or delete your container. Explore your images
The Images view is a simple interface that lets you manage Docker images without having to use the CLI. By default, it displays a list of all Docker images on your local disk. To view images in remote repositories, click Sign in and connect to Docker Hub. This allows you to collaborate with your team and manage your images directly through Docker Desktop.
The Images view allows you to perform core operations such as running an image as a container, pulling the latest version of an image from Docker Hub, pushing the image to Docker Hub, and inspecting images.
In addition, the Images view displays metadata about the image such as the tag, image ID, date when the image was created, and the size of the image. It also displays In Use tags next to images used by running and stopped containers. This allows you to review the list of images and use the Clean up images option to remove any unwanted images from the disk to reclaim space.
The Images view also allows you to search images on your local disk and sort them using various options. Aeon cobra 180 service manual.
Lets explore the various options in the Images view.
If you dont have any images on your disk, run the command docker pull redis in a terminal to pull the latest Redis image. This command pulls the latest Redis image from Docker Hub.
Select Dashboard Images to see the Redis image. Run an image as a container
Now that you have a Redis image on your disk, lets run this image as a container:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the Redis image from the list and click Run .
When prompted, click the Optional settings drop-down to specify a name, port, volumes, and click Run .
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To use the defaults, click Run without specifying any optional settings. This creates a new container from the Redis image and opens it on the Container/Apps view. Pull the latest image from Docker Hub
To pull the latest image from Docker Hub:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the image from the list and click the more options button.
Click Pull . This pulls the latest version of the image from Docker Hub.
Note
The repository must exist on Docker Hub in order to pull the latest version of an image. You must be logged in to pull private images. Push an image to Docker Hub
To push an image to Docker Hub:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the image from the list and click the more options button.
Click Push to Hub.
Note
You can only push an image to Docker Hub if the image belongs to your Docker ID or your organization. That is, the image must contain the correct username/organization in its tag to be able to push it to Docker Hub. Inspect an image
Inspecting an image displays detailed information about the image such as the image history, image ID, the date the image was created, size of the image, etc. To inspect an image:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the image from the list and click the more options button.
Click Inspect .
The image inspect view also provides options to pull the latest image, push image to Hub, remove the image, or run the image as a container. Remove an image
The Images view allows you to remove unwanted images from the disk. The Images on disk status bar displays the number of images and the total disk space used by the images.
You can remove individual images or use the Clean up option to delete unused and dangling images.
To remove individual images:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the image from the list and click the more options button.
Click Remove . This removes the image from your disk.
Note
To remove an image used by a running or a stopped container, you must first remove the associated container.
To remove unused and dangling images:
An unused image is an image which is not used by any running or stopped containers. An image becomes dangling when you build a new version of the image with the same tag.
To remove an unused or a dangling image:
From the Docker menu, select Dashboard Images . This displays a list of images on your disk.
Select the Clean up option from the Images on disk status bar.
Use the Unused and Dangling check boxes to select the type of images you would like to remove.
The Clean up images status bar displays the total space you can reclaim by removing the selected images.
Click Remove to confirm. Interact with remote repositories
The Images view also allows you to manage and interact with images in remote repositories and lets you switch between organizations. Select an organization from the drop-down to view a list of repositories in your organization.
Note
If you have subscribed to a Pro or a Team plan and enabled Vulnerability Scanning in Docker Hub, the scan results will appear on the Remote repositories tab.
The Pull option allows you to pull the latest version of the image from Docker Hub. The View in Hub option opens the Docker Hub page and displays detailed information about the image, such as the OS architecture, size of the image, the date when the image was pushed, and a list of the image layers.
To interact with remote repositories:
Click the Remote repositories tab.
Select an organization from the drop-down list. This displays a list of repositories in your organization.
Click on an image from the list and then select Pull to pull the latest image from the remote repository.
To view a detailed information about the image in Docker Hub, select the image and then click View in Hub .
The View in Hub option opens the Docker Hub page and displays detailed information about the image, such as the OS architecture, size of the image, the date when the image was pushed, and a list of the image layers.
If you have subscribed to a Pro or a Team plan and have enabled Vulnerability Scanning the Docker Hub page also displays a summary of the vulnerability scan report and provides detailed information about the vulnerabilities identified. Docker Dashboard, manage, containers, images
Docker Pull From Private Registry
Estimated reading time: 35 minutes
The Registry configuration is based on a YAML file, detailed below. While itcomes with sane default values out of the box, you should review it exhaustivelybefore moving your systems to production. Override specific configuration options
CPUs: By default, Docker Desktop is set to use half the number of processors available on the host machine. To increase processing power, set this to a higher number; to decrease, lower the number. Memory: By default, Docker Desktop is set to use 2 GB runtime memory, allocated from the total available memory on your Mac. To increase the RAM. Unless youre paying extra for the private repositories, pushing equals publishing. When working on some clusters, each time you launch a job that uses a Docker container it pulls the container from Docker Hub, and if you are running many jobs, this can be really slow. Pull the official Nginx image. First, pull the public Nginx image to your local computer. Docker pull nginx Run the container locally. Execute following docker run command to start a local instance of the Nginx container interactively (-it) on port 8080.The -rm argument specifies that the container should be removed when you stop it. Docker run -it -rm -p 8080:80 nginx. One of the things that makes Docker so useful is how easy it is to pull ready-to-use images from a central location, Dockers Central Registry.It is just as easy to push your own image (or collection of tagged images as a repository) to the same public registry so that everyone can benefit from your newly Dockerized service.
In a typical setup where you run your Registry from the official image, you canspecify a configuration variable from the environment by passing -e argumentsto your docker run stanza or from within a Dockerfile using the ENV instruction.
To override a configuration option, create an environment variable named REGISTRY_variable where variable is the name of the configuration optionand the _ (underscore) represents indention levels. For example, you canconfigure the rootdirectory of the filesystem storage backend:
To override this value, set an environment variable like this:
This variable overrides the /var/lib/registry value to the /somewhere directory.
Note : Create a base configuration file with environment variables that canbe configured to tweak individual values. Overriding configuration sectionswith environment variables is not recommended. Overriding the entire configuration file
If the default configuration is not a sound basis for your usage, or if you arehaving issues overriding keys from the environment, you can specify an alternateYAML configuration file by mounting it as a volume in the container.
Typically, create a new configuration file from scratch,named config.yml , thenspecify it in the docker run command:
Use thisexample YAML fileas a starting point. List of configuration options
These are all configuration options for the registry. Some options in the listare mutually exclusive. Read the detailed reference information about eachoption before finalizing your configuration. Uplink developer cd zip files .
In some instances a configuration option is optional but it contains childoptions marked as required . In these cases, you can omit the parent withall its children. However, if the parent is included, you must also include allthe children marked required . version
The version option is required . It specifies the configurations version.It is expected to remain a top-level field, to allow for a consistent versioncheck before parsing the remainder of the configuration file. log
The log subsection configures the behavior of the logging system. The loggingsystem outputs everything to stdout. You can adjust the granularity and formatwith this configuration section. Parameter Required Description level no Sets the sensitivity of logging output. Permitted values are error , warn , info , and debug . The default is info . formatter no This selects the format of logging output. The format primarily affects how keyed attributes for a log line are encoded. Options are text , json , and logstash . The default is text . fields no A map of field names to values. These are added to every log line for the context. This is useful for identifying log messages source after being mixed in other systems. accesslog
Within log , accesslog configures the behavior of the access loggingsystem. By default, the access logging system outputs to stdout inCombined Log Format.Access logging can be disabled by setting the boolean flag disabled to true . hooks
The hooks subsection configures the logging hooks behavior. This subsectionincludes a sequence handler which you can use for sending mail, for example.Refer to loglevel to configure the level of messages printed. loglevel
DEPRECATED: Please use log instead.
Permitted values are error , warn , info and debug . The default is info . storage
The storage option is required and defines which storage backend is inuse. You must configure exactly one backend. If you configure more, the registryreturns an error. You can choose any of these backend storage drivers: Storage driver Description filesystem Uses the local disk to store registry files. It is ideal for development and may be appropriate for some small-scale production applications. See the drivers reference documentation. azure Uses Microsoft Azure Blob Storage. See the drivers reference documentation. gcs Uses Google Cloud Storage. See the drivers reference documentation. s3 Uses Amazon Simple Storage Service (S3) and compatible Storage Services. See the drivers reference documentation. swift Uses Openstack Swift object storage. See the drivers reference documentation. oss Uses Aliyun OSS for object storage. See the drivers reference documentation.
For testing only, you can use the inmemory storagedriver.If you would like to run a registry from volatile memory, use the filesystem driveron a ramdisk.
If you are deploying a registry on Windows, a Windows volume mounted from thehost is not recommended. Instead, you can use a S3 or Azure backingdata-store. If you do use a Windows volume, the length of the PATH tothe mount point must be within the MAX_PATH limits (typically 255 characters),or this error will occur: maintenance
Currently, upload purging and read-only mode are the only maintenance functions available. uploadpurging
Upload purging is a background process that periodically removes orphaned filesfrom the upload directories of the registry. Upload purging is enabled bydefault. To configure upload directory purging, the following parameters mustbe set. Parameter Required Description enabled yes Set to true to enable upload purging. Defaults to true . age yes Upload directories which are older than this age will be deleted.Defaults to 168h (1 week). interval yes The interval between upload directory purging. Defaults to 24h . dryrun yes Set dryrun to true to obtain a summary of what directories will be deleted. Defaults to false .
Note : age and interval are strings containing a number with optionalfraction and a unit suffix. Some examples: 45m , 2h10m , 168h . readonly
If the readonly section under maintenance has enabled set to true ,clients will not be allowed to write to the registry. This mode is useful totemporarily prevent writes to the backend storage so a garbage collection passcan be run. Before running garbage collection, the registry should berestarted with readonlys enabled set to true. After the garbage collectionpass finishes, the registry may be restarted again, this time with readonly removed from the configuration (or set to false). delete
Use the delete structure to enable the deletion of image blobs and manifestsby digest. It defaults to false, but it can be enabled by writing the followingon the configuration file: cache
Use the cache structure to enable caching of data accessed in the storagebackend. Currently, the only available cache provides fast access to layermetadata, which uses the blobdescriptor field if configured.
You can set blobdescriptor field to redis or inmemory . If set to redis ,aRedis pool caches layer metadata. If set to inmemory , an in-memory map cacheslayer metadata.
NOTE : Formerly, blobdescriptor was known as layerinfo . While theseare equivalent, layerinfo has been deprecated. redirect
The redirect subsection provides configuration for managing redirects fromcontent backends. For backends that support it, redirecting is enabled bydefault. In certain deployment scenarios, you may decide to route all datathrough the Registry, rather than redirecting to the backend. This may be moreefficient when using a backend that is not co-located or when a registryinstance is aggressively caching.
To disable redirects, add a single flag disable , set to true under the redirect section: auth
The auth option is optional . Possible auth providers include:
[ none ]
You can configure only one authentication provider. silly
The silly authentication provider is only appropriate for development. It simply checksfor the existence of the Authorization header in the HTTP request. It does notcheck the headers value. If the header does not exist, the silly authresponds with a challenge response, echoing back the realm, service, and scopefor which access was denied.
The following values are used to configure the response: Parameter Required Description realm yes The realm in which the registry server authenticates. service yes The service being authenticated. token
Token-based authentication allows you to decouple the authentication system fromthe registry. It is an established authentication paradigm with a high degree ofsecurity. Parameter Required Description realm yes The realm in which the registry server authenticates. service yes The service being authenticated. issuer yes The name of the token issuer. The issuer inserts this into the token so it must match the value configured for the issuer. rootcertbundle yes The absolute path to the root certificate bundle. This bundle contains the public part of the certificates used to sign authentication tokens. autoredirect no When set to true , realm will automatically be set using the Host header of the request as the domain and a path of /auth/token/
For more information about Token based authentication configuration, see thespecification. htpasswd
The htpasswd authentication backed allows you to configure basicauthentication using anApache htpasswd file.The only supported password format is bcrypt . Entries with other hash typesare ignored. The htpasswd file is loaded once, at startup. If the file isinvalid, the registry will display an error and will not start.
Warning : If the htpasswd file is missing, the file will be created and provisioned with a default user and automatically generated password.The password will be printed to stdout.
Warning : Only use the htpasswd authentication scheme with TLSconfigured, since basic authentication sends passwords as part of the HTTPheader. Parameter Required Description realm yes The realm in which the registry server authenticates. path yes The path to the htpasswd file to load at startup. Cannot Pull Private Repository Using Docker For Mac Os middleware
The middleware structure is optional . Use this option to inject middleware atnamed hook points. Each middleware must implement the same interface as theobject it is wrapping. For instance, a registry middleware must implement the distribution.Namespace interface, while a repository middleware must implement distribution.Repository , and a storage middleware must implement driver.StorageDriver .
This is an example configuration of the cloudfront middleware, a storagemiddleware:
Each middleware entry has name and options entries. The name mustcorrespond to the name under which the middleware registers itself. The options field is a map that details custom configuration required toinitialize the middleware. It is treated as a map[string]interface . As such,it supports any interesting structures desired, leaving it up to the middlewareinitialization function to best determine how to handle the specificinterpretation of the options. cloudfront Parameter Required Description baseurl yes The SCHEME://HOST[/PATH] at which Cloudfront is served. privatekey yes The private key for Cloudfront, provided by AWS. keypairid yes The key pair ID provided by AWS. duration no An integer and unit for the duration of the Cloudfront session. Valid time units are ns , us (or s ), ms , s , m , or h . For example, 3000s is valid, but 3000 s is not. If you do not specify a duration or you specify an integer without a time unit, the duration defaults to 20m (20 minutes). ipfilteredby no A string with the following value none , aws or awsregion . awsregion no A comma separated string of AWS regions, only available when ipfilteredby is awsregion . For example, us-east-1, us-west-2 updatefrenquency no The frequency to update AWS IP regions, default: 12h iprangesurl no The URL contains the AWS IP ranges information, default: https://ip-ranges.amazonaws.com/ip-ranges.json
Value of ipfilteredby can be: Value Description none default, do not filter by IP aws IP from AWS goes to S3 directly awsregion IP from certain AWS regions goes to S3 directly, use together with awsregion . redirect
You can use the redirect storage middleware to specify a custom URL to alocation of a proxy for the layer stored by the S3 storage driver. Parameter Required Description baseurl yes SCHEME://HOST at which layers are served. Can also contain port. For example, https://example.com:5443 . reporting
The reporting option is optional and configures error and metricsreporting tools. At the moment only two services are supported:
A valid configuration may contain both. bugsnag Parameter Required Description apikey yes The API Key provided by Bugsnag. releasestage no Tracks where the registry is deployed, using a string like production , staging , or development . endpoint no The enterprise Bugsnag endpoint. newrelic Parameter Required Description licensekey yes License key provided by New Relic. name no New Relic application name. verbose no Set to true to enable New Relic debugging output on stdout . http
The http option details the configuration for the HTTP server that hosts theregistry. Parameter Required Description addr yes The address for which the server should accept connections. The form depends on a network type (see the net option). Use HOST:PORT for TCP and FILE for a UNIX socket. net no The network used to create a listening socket. Known networks are unix and tcp . prefix no If the server does not run at the root path, set this to the value of the prefix. The root path is the section before v2 . It requires both preceding and trailing slashes, such as in the example /path/ . host no A fully-qualified URL for an externally-reachable address for the registry. If present, it is used when creating generated URLs. Otherwise, these URLs are derived from client requests. secret no A random piece of data used to sign state that may be stored with the client to protect against tampering. For production environments you should generate a random piece of data using a cryptographically secure random generator. If you omit the secret, the registry will automatically generate a secret when it starts. If you are building a cluster of registries behind a load balancer, you MUST ensure the secret is the same for all registries. relativeurls no If true , the registry returns relative URLs in Location headers. The client is responsible for resolving the correct URL. This option is not compatible with Docker 1.7 and earlier. draintimeout no Amount of time to wait for HTTP connections to drain before shutting down after registry receives SIGTERM signal tls
The tls structure within http is optional . Use this to configure TLSfor the server. If you already have a web server running onthe same host as the registry, you may prefer to configure TLS on that web serverand proxy connections to the registry server. Parameter Required Description certificate yes Absolute path to the x509 certificate file. key yes Absolute path to the x509 private key file. clientcas no An array of absolute paths to x509 CA files. letsencrypt
The letsencrypt structure within tls is optional . Use this to configureTLS certificates provided byLets Encrypt.
NOTE : When using Lets Encrypt, ensure that the outward-facing address isaccessible on port 443 . The registry defaults to listening on port 5000 .If you run the registry as a container, consider adding the flag -p 443:5000 to the docker run command or using a similar setting in a cloudconfiguration. You should also set the hosts option to the list of hostnamesthat are valid for this registry to avoid trying to get certificates for randomhostnames due to malicious clients connecting with bogus SNI hostnames. Parameter Required Description cachefile yes Absolute path to a file where the Lets Encrypt agent can cache data. email yes The email address used to register with Lets Encrypt. hosts no The hostnames allowed for Lets Encrypt certificates. debug
The debug option is optional . Use it to configure a debug server thatcan be helpful in diagnosing problems. The debug endpoint can be used formonitoring registry metrics and health, as well as profiling. Sensitiveinformation may be available via the debug endpoint. Please be certain thataccess to the debug endpoint is locked down in a production environment.
The debug section takes a single required addr parameter, which specifiesthe HOST:PORT on which the debug server should accept connections. prometheus
The prometheus option defines whether the prometheus metrics is enable, as wellas the path to access the metrics. Parameter Required Description enabled no Set true to enable the prometheus server path no The path to access the metrics, /metrics by default
The url to access the metrics is HOST:PORT/path , where HOST:PORT is definedin addr under debug . headers
The headers option is optional . Use it to specify headers that the HTTPserver should include in responses. This can be used for security headers suchas Strict-Transport-Security .
The headers option should contain an option for each header to include, wherethe parameter name is the headers name, and the parameter value a list of theheaders payload values.
Including X-Content-Type-Options: [nosniff] is recommended, so that browserswill not interpret content as HTML if they are directed to load a page from theregistry. This header is included in the example configuration file. http2
The http2 structure within http is optional . Use this to control http2settings for the registry. Parameter Required Description disabled no If true , then http2 support is disabled. notifications
The notifications option is optional and currently may contain a singleoption, endpoints . endpoints
The endpoints structure contains a list of named services (URLs) that canaccept event notifications. Parameter Required Description name yes A human-readable name for the service. disabled no If true , notifications are disabled for the service. url yes The URL to which events should be published. headers yes A list of static headers to add to each request. Each headers name is a key beneath headers , and each value is a list of payloads for that header name. Values must always be lists. timeout yes A value for the HTTP timeout. A positive integer and an optional suffix indicating the unit of time, which may be ns , us , ms , s , m , or h . If you omit the unit of time, ns is used. threshold yes An integer specifying how long to wait before backing off a failure. backoff yes How long the system backs off before retrying after a failure. A positive integer and an optional suffix indicating the unit of time, which may be ns , us , ms , s , m , or h . If you omit the unit of time, ns is used. ignoredmediatypes no A list of target media types to ignore. Events with these target media types are not published to the endpoint. ignore no Events with these mediatypes or actions are not published to the endpoint. ignore
Parameter Required Description ---------------------------------------------------------------------------- mediatypes no A list of target media types to ignore. Events with these target media types are not published to the endpoint. actions no A list of actions to ignore. Events with these actions are not published to the endpoint. events
The events structure configures the information provided in event notifications. Parameter Required Description includereferences no If true , include reference information in manifest events. redis
Declare parameters for constructing the redis connections. Registry instancesmay use the Redis instance for several applications. Currently, it cachesinformation about immutable blobs. Most of the redis options controlhow the registry connects to the redis instance. You can control the poolsbehavior with the pool subsection.
You should configure Redis with the allkeys-lru eviction policy, because theregistry does not set an expiration value on keys. Parameter Required Description addr yes The address (host and port) of the Redis instance. password no A password used to authenticate to the Redis instance. db no The name of the database to use for each connection. dialtimeout no The timeout for connecting to the Redis instance. readtimeout no The timeout for reading from the Redis instance. writetimeout no The timeout for writing to the Redis instance. pool
Use these settings to configure the behavior of the Redis connection pool. Parameter Required Description maxidle no The maximum number of idle connections in the pool. maxactive no The maximum number of connections which can be open before blocking a connection request. idletimeout no How long to wait before closing inactive connections. health
The health option is optional , and contains preferences for a periodichealth check on the storage drivers backend storage, as well as optionalperiodic checks on local files, HTTP URIs, and/or TCP servers. The results ofthe health checks are available at the /debug/health endpoint on the debugHTTP server if the debug HTTP server is enabled (see http section). storagedriver
The storagedriver structure contains options for a health check on theconfigured storage drivers backend storage. The health check is only activewhen enabled is set to true . Parameter Required Description enabled yes Set to true to enable storage driver health checks or false to disable them. interval no How long to wait between repetitions of the storage driver health check. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . Defaults to 10s if the value is omitted. If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. threshold no A positive integer which represents the number of times the check must fail before the state is marked as unhealthy. If not specified, a single failure marks the state as unhealthy. Docker Pull From Private Registry file
The file structure includes a list of paths to be periodically checked for theexistence of a file. If a file exists at the given path, the health check willfail. You can use this mechanism to bring a registry out of rotation by creatinga file. Parameter Required Description file yes The path to check for existence of a file. interval no How long to wait before repeating the check. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . Defaults to 10s if the value is omitted. If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. http
The http structure includes a list of HTTP URIs to periodically check with HEAD requests. If a HEAD request does not complete or returns an unexpectedstatus code, the health check will fail. Parameter Required Description uri yes The URI to check. headers no Static headers to add to each request. Each headers name is a key beneath headers , and each value is a list of payloads for that header name. Values must always be lists. statuscode no The expected status code from the HTTP URI. Defaults to 200 . timeout no How long to wait before timing out the HTTP request. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. interval no How long to wait before repeating the check. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . Defaults to 10s if the value is omitted. If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. threshold no The number of times the check must fail before the state is marked as unhealthy. If this field is not specified, a single failure marks the state as unhealthy. tcp
The tcp structure includes a list of TCP addresses to periodically check usingTCP connection attempts. Addresses must include port numbers. If a connectionattempt fails, the health check will fail. Parameter Required Description addr yes The TCP address and port to connect to. timeout no How long to wait before timing out the TCP connection. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. interval no How long to wait between repetitions of the check. A positive integer and an optional suffix indicating the unit of time. The suffix is one of ns , us , ms , s , m , or h . Defaults to 10s if the value is omitted. If you specify a value but omit the suffix, the value is interpreted as a number of nanoseconds. threshold no The number of times the check must fail before the state is marked as unhealthy. If this field is not specified, a single failure marks the state as unhealthy. proxy
The proxy structure allows a registry to be configured as a pull-through cacheto Docker Hub. Seemirrorfor more information. Pushing to a registry configured as a pull-through cacheis unsupported. Parameter Required Description remoteurl yes The URL for the repository on Docker Hub. username no The username registered with Docker Hub which has access to the repository. password no The password used to authenticate to Docker Hub using the username specified in username .
To enable pulling private repositories (e.g. batman/robin ) specify theusername (such as batman ) and the password for that username.
Note : These private repositories are stored in the proxy caches storage.Take appropriate measures to protect access to the proxy cache. compatibility
Use the compatibility structure to configure handling of older and deprecatedfeatures. Each subsection defines such a feature with configurable behavior. schema1 Parameter Required Description signingkeyfile no The signing private key used to add signatures to schema1 manifests. If no signing key is provided, a new ECDSA key is generated when the registry starts. enabled no If this is not set to true, schema1 manifests cannot be pushed. validation disabled
The disabled flag disables the other options in the validation section. They are enabled by default. This option deprecates the enabled flag. manifests
Use the manifests subsection to configure validation of manifests. If disabled is false , the validation allows nothing. urls
The allow and deny options are each a list ofregular expressions that restrict the URLs inpushed manifests.
If allow is unset, pushing a manifest containing URLs fails.
If allow is set, pushing a manifest succeeds only if all URLs matchone of the allow regular expressions and one of the following holds:
deny is unset.
deny is set but no URLs within the manifest match any of the deny regularexpressions. Example: Development configuration
You can use this simple example for local development:
This example configures the registry instance to run on port 5000 , binding to localhost , with the debug server enabled. Registry data is stored in the /var/lib/registry directory. Logging is set to debug mode, which is the mostverbose.
Seeconfig-example.ymlfor another simple configuration. Both examples are generally useful for localdevelopment. Example: Middleware configuration
This example configures Amazon Cloudfrontas the storage middleware in a registry. Middleware allows the registry to servelayers via a content delivery network (CDN). This reduces requests to thestorage layer.
Cloudfront requires the S3 storage driver.
This is the configuration expressed in YAML:
See the configuration reference for Cloudfront for moreinformation about configuration options.
Note : Cloudfront keys exist separately from other AWS keys. Seethe documentation on AWS credentialsfor more information. registry, on-prem, images, tags, repository, distribution, configuration
Estimated reading time: 11 minutes
The Docker Dashboard provides a simple interface that enables you to manage your containers, applications, and images directly from your machine without having to use the CLI to perform core actions.
The Containers/Apps view provides a runtime view of all your containers and applications. It allows you to interact with containers and applications, and manage the lifecycle of your applications directly from your machine. This view also provides an intuitive interface to perform common actions to inspect, interact with, and manage your Docker objects including containers and Docker Compose-based applications.
The Images view displays a list of your Docker images, and allows you to run an image as a container, pull the latest version of an image from Docker Hub, and inspect images. It also displays a summary of the vulnerability scanning report using Snyk. In addition, the Images view contains clean up options to remove unwanted images from the disk to reclaim space. If you are logged in, you can also see the images you and your organization have shared on Docker Hub.
In addition, the Docker Dashboard allows you to:
Easily navigate to the Preferences ( Settings in Windows) menu to configure Docker Desktop preferences
Access the Troubleshoot menu to debug and perform restart operations
Sign into Docker Hub using your Docker ID
To access the Docker Dashboard, from the Docker menu, select Dashboard . On Windows, click the Docker icon to open the Dashboard. Explore running containers and applications
From the Docker menu, select Dashboard . This lists all your running containers and applications. You must have running or stopped containers and applications to see them listed on the Docker Dashboard.
The following sections guide you through the process of creating a sample Redis container and a sample application to demonstrate the core functionalities in Docker Dashboard. Start a Redis container
To start a Redis container, open your preferred CLI and run the following command:
docker run -dt redis
This creates a new Redis container. From the Docker menu, select Dashboard to see the new Redis container. Start a sample application
Lets start a sample application. Download the Example voting app from the Docker samples page. The example voting app is a distributed application that runs across multiple Docker containers. The app contains:
A front-end web app in Python or ASP.NET Core which lets you vote between two options
A Redis or NATS queue which collects new votes
A .NET Core, Java or .NET Core 2.1 worker which consumes votes and stores them
A Postgres or TiDB database backed by a Docker volume
A Node.js or ASP.NET Core SignalR web app which shows the results of the voting in real time
To start the application, navigate to the directory containing the example voting application in the CLI and run docker-compose up --build .
When the application starts successfully, from the Docker menu, select Dashboard to see the Example voting application. Expand the application to see the containers running inside the application.
Now that you can see the list of running containers and applications on the Dashboard, let us explore some of the actions you can perform:
Click Port to open the port exposed by the container in a browser.
Click CLI to open a terminal and run commands on the container.
Click Stop , Start , Restart , or Delete to perform lifecycle operations on the container.
Use the Search option to search for a specific object. You can also sort your containers and applications using various options. Click the Sort by drop-down to see a list of available options. Interact with containers and applications
From the Docker Dashboard, select the example voting application we started earlier.
The Containers/Apps view lists all the containers running on the application and contains a detailed logs view. It also allows you to start, stop, or delete the application. Use the Search option at the bottom of the logs view to search application logs for specific events, or select the Copy icon to copy the logs to your clipboard.
Click Open in Visual Studio Code to open the application to open the application in VS Code. Hover over the list of containers to see some of the core actions you can perform. Container view
Click on a specific container for detailed information about the container. The container view displays Logs , Inspect , and Stats tabs and provides quick action buttons to perform various actions.
Select Logs to see logs from the container. You can also search the logs for specific events and copy the logs to your clipboard.
Select Inspect to view low-level information about the container. You can see the local path, version number of the image, SHA-256, port mapping, and other details.
Select Stats to view information about the container resource utilization. You can see the amount of CPU, disk I/O, memory, and network I/O used by the container.
You can also use the quick action buttons on the top bar to perform common actions such as opening a CLI to run commands in a container, and perform lifecycle operations such as stop, start, restart, or delete your container. Explore your images
The Images view is a simple interface that lets you manage Docker images without having to use the CLI. By default, it displays a list of all Docker images on your local disk. To view images in remote repositories, click Sign in and connect to Docker Hub. This allows you to collaborate with your team and manage your images directly through Docker Desktop.
The Images view allows you to perform core operations such as running an image as a container, pulling the latest version of an image from Docker Hub, pushing the image to Docker Hub, and inspecting images.
In addition, the Images view displays metadata about the image such as the tag, image ID, date when the image was created, and the size of the image. It also displays In Use tags next to images used by running and stopped containers. This allows you to review the list of images and use the Clean up images option to remove any unwanted images from the disk to reclaim space.
The Images view also allows you to search images on your local disk and sort them using various options. Aeon cobra 180 service manual.
Lets explore the various options in the Images view.
If you dont have any images on your disk, run the command docker pull redis in a terminal to pull the latest Redis image. This command pulls the latest Redis image from Docker Hub.
Select Dashboard Images to see the Redis image. Run an image as a container
Now that you have a Redis image on your disk, lets run this image as a container:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the Redis image from the list and click Run .
When prompted, click the Optional settings drop-down to specify a name, port, volumes, and click Run .
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To use the defaults, click Run without specifying any optional settings. This creates a new container from the Redis image and opens it on the Container/Apps view. Pull the latest image from Docker Hub
To pull the latest image from Docker Hub:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the image from the list and click the more options button.
Click Pull . This pulls the latest version of the image from Docker Hub.
Note
The repository must exist on Docker Hub in order to pull the latest version of an image. You must be logged in to pull private images. Push an image to Docker Hub
To push an image to Docker Hub:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the image from the list and click the more options button.
Click Push to Hub.
Note
You can only push an image to Docker Hub if the image belongs to your Docker ID or your organization. That is, the image must contain the correct username/organization in its tag to be able to push it to Docker Hub. Inspect an image
Inspecting an image displays detailed information about the image such as the image history, image ID, the date the image was created, size of the image, etc. To inspect an image:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the image from the list and click the more options button.
Click Inspect .
The image inspect view also provides options to pull the latest image, push image to Hub, remove the image, or run the image as a container. Remove an image
The Images view allows you to remove unwanted images from the disk. The Images on disk status bar displays the number of images and the total disk space used by the images.
You can remove individual images or use the Clean up option to delete unused and dangling images.
To remove individual images:
From the Docker menu, select Dashboard Images . This displays a list of images on your local disk.
Select the image from the list and click the more options button.
Click Remove . This removes the image from your disk.
Note
To remove an image used by a running or a stopped container, you must first remove the associated container.
To remove unused and dangling images:
An unused image is an image which is not used by any running or stopped containers. An image becomes dangling when you build a new version of the image with the same tag.
To remove an unused or a dangling image:
From the Docker menu, select Dashboard Images . This displays a list of images on your disk.
Select the Clean up option from the Images on disk status bar.
Use the Unused and Dangling check boxes to select the type of images you would like to remove.
The Clean up images status bar displays the total space you can reclaim by removing the selected images.
Click Remove to confirm. Interact with remote repositories
The Images view also allows you to manage and interact with images in remote repositories and lets you switch between organizations. Select an organization from the drop-down to view a list of repositories in your organization.
Note
If you have subscribed to a Pro or a Team plan and enabled Vulnerability Scanning in Docker Hub, the scan results will appear on the Remote repositories tab.
The Pull option allows you to pull the latest version of the image from Docker Hub. The View in Hub option opens the Docker Hub page and displays detailed information about the image, such as the OS architecture, size of the image, the date when the image was pushed, and a list of the image layers.
To interact with remote repositories:
Click the Remote repositories tab.
Select an organization from the drop-down list. This displays a list of repositories in your organization.
Click on an image from the list and then select Pull to pull the latest image from the remote repository.
To view a detailed information about the image in Docker Hub, select the image and then click View in Hub .
The View in Hub option opens the Docker Hub page and displays detailed information about the image, such as the OS architecture, size of the image, the date when the image was pushed, and a list of the image layers.
If you have subscribed to a Pro or a Team plan and have enabled Vulnerability Scanning the Docker Hub page also displays a summary of the vulnerability scan report and provides detailed information about the vulnerabilities identified. Docker Dashboard, manage, containers, images
