If kubectl was already installed before Docker For Mac, restore the existing kubectl when sitching Kubernetes off in Docker for Mac. Migration of Docker Toolbox images is not proposed anymore in Docker For Mac installer (still possible to migrate Toolbox images manually). Docker Community Edition 17.12.0-ce-mac45 2018-01-05. With the Mac, however, things are a little different. The above solution doesn't work, as Docker for Mac relies on a internal VM whose filesystem gets wiped on restarts. The correct solution (thanks to Justin Cormack) is to add the certificate to the Mac's keychain, which will be picked up by Docker for Mac e.g. Sudo docker pull ubuntu Then you can save this image to a file. Sudo docker save -o ubuntuimage.docker ubuntu Transfer the file on the offline computer (USB/CD/whatever) and load the image from the file: sudo docker load -i ubuntuimage.docker (On older versions this was just docker load image.docker, see comments for more info.).
Description
Pull an image or a repository from a registry
UsageExtended description
Most of your images will be created on top of a base image from theDocker Hub registry.
Docker Hub contains many pre-built images that youcan
pull and try without needing to define and configure your own.
To download a particular image, or set of images (i.e., a repository),use
docker pull .
Proxy configuration
If you are behind an HTTP proxy server, for example in corporate settings,before open a connect to registry, you may need to configure the Dockerdaemon’s proxy settings, using the
HTTP_PROXY , HTTPS_PROXY , and NO_PROXY environment variables. To set these environment variables on a host usingsystemd , refer to the control and configure Docker with systemdfor variables configuration.
Concurrent downloads
By default the Docker daemon will pull three layers of an image at a time.If you are on a low bandwidth connection this may cause timeout issues and you may want to lowerthis via the
--max-concurrent-downloads daemon option. See thedaemon documentation for more details.
For example uses of this command, refer to the examples section below.
Options
ExamplesPull an image from Docker Hub
To download a particular image, or set of images (i.e., a repository), use
docker pull . If no tag is provided, Docker Engine uses the :latest tag as adefault. This command pulls the debian:latest image:
Docker images can consist of multiple layers. In the example above, the imageconsists of two layers;
fdd5d7827f33 and a3ed95caeb02 .
Layers can be reused by images. For example, the
debian:jessie image sharesboth layers with debian:latest . Pulling the debian:jessie image thereforeonly pulls its metadata, but not its layers, because all layers are alreadypresent locally:
To see which images are present locally, use the
docker images command:
Docker uses a content-addressable image store, and the image ID is a SHA256digest covering the image’s configuration and layers. In the example above,
debian:jessie and debian:latest have the same image ID because they areactually the same image tagged with different names. Because they are thesame image, their layers are stored only once and do not consume extra diskspace.
For more information about images, layers, and the content-addressable store,refer to understand images, containers, and storage drivers.
Pull an image by digest (immutable identifier)
So far, you’ve pulled images by their name (and “tag”). Using names and tags isa convenient way to work with images. When using tags, you can
docker pull animage again to make sure you have the most up-to-date version of that image.For example, docker pull ubuntu:14.04 pulls the latest version of the Ubuntu14.04 image.
In some cases you don’t want images to be updated to newer versions, but preferto use a fixed version of an image. Docker enables you to pull an image by itsdigest. When pulling an image by digest, you specify exactly which versionof an image to pull. Doing so, allows you to “pin” an image to that version,and guarantee that the image you’re using is always the same.
To know the digest of an image, pull the image first. Let’s pull the latest
ubuntu:14.04 image from Docker Hub:
Docker prints the digest of the image after the pull has finished. In the exampleabove, the digest of the image is:
Docker also prints the digest of an image when pushing to a registry. Thismay be useful if you want to pin to a version of the image you just pushed.
A digest takes the place of the tag when pulling an image, for example, topull the above image by digest, run the following command:
Digest can also be used in the
FROM of a Dockerfile, for example:
Note
Using this feature “pins” an image to a specific version in time.Docker will therefore not pull updated versions of an image, which may includesecurity updates. If you want to pull an updated image, you need to change thedigest accordingly.
Pull from a different registry
By default,
docker pull pulls images from Docker Hub. It is also possible tomanually specify the path of a registry to pull from. For example, if you haveset up a local registry, you can specify its path to pull from it. A registrypath is similar to a URL, but does not contain a protocol specifier (https:// ).
The following command pulls the
testing/test-image image from a local registrylistening on port 5000 (myregistry.local:5000 ):
Luma vms for mac download version. Registry credentials are managed by docker login.
Docker uses the
https:// protocol to communicate with a registry, unless theregistry is allowed to be accessed over an insecure connection. Refer to theinsecure registries section for more information.
Pull a repository with multiple images
By default,
docker pull pulls a single image from the registry. A repositorycan contain multiple images. To pull all images from a repository, provide the-a (or --all-tags ) option when using docker pull .
This command pulls all images from the
fedora repository:
After the pull has completed use the
docker images command to see theimages that were pulled. The example below shows all the fedora imagesthat are present locally:
Cancel a pull
Killing the
docker pull process, for example by pressing CTRL-c while it isrunning in a terminal, will terminate the pull operation.
Note
The Engine terminates a pull operation when the connection between the DockerEngine daemon and the Docker Engine client initiating the pull is lost. If theconnection with the Engine daemon is lost for other reasons than a manualinteraction, the pull is also aborted.
Parent command
Docker Desktop for Mac is the Community version of Docker for Mac.You can download Docker Desktop for Mac from Docker Hub.
By downloading Docker Desktop, you agree to the terms of the Docker Software End User License Agreement and the Docker Data Processing Agreement.
What to know before you install
README FIRST for Docker Toolbox and Docker Machine users
If you are already running Docker on your machine, first readDocker Desktop for Mac vs. Docker Toolbox to understand theimpact of this installation on your existing setup, how to set your environmentfor Docker Desktop on Mac, and how the two products can coexist.
Relationship to Docker Machine: Installing Docker Desktop on Mac does not affect machines you created with Docker Machine. You have the option to copy containers and images from your local
default machine (if one exists) to the Docker Desktop HyperKit VM. Whenyou are running Docker Desktop, you do not need Docker Machine nodes running locally (or anywhere else). With Docker Desktop, you have a new, nativevirtualization system running (HyperKit) which takes the place of theVirtualBox system. To learn more, see Docker Desktop for Mac vs. Docker Toolbox.
Docker Pull Download Location MacosSystem requirements
Your Mac must meet the following requirements to successfully install Docker Desktop:
What’s included in the installer
The Docker Desktop installation includes Docker Engine, Docker CLI client, Docker Compose, Notary, Kubernetes, and Credential Helper.
Install and run Docker Desktop on Mac
Congratulations! You are now successfully running Docker Desktop.
If you would like to rerun the tutorial, go to the Docker Desktop menu and select Learn.
Uninstall Docker Desktop
To unistall Docker Desktop from your Mac:
Note: Uninstalling Docker Desktop will destroy Docker containers and images local to the machine and remove the files generated by the application.
Switch between Stable and Edge versions
Docker Desktop allows you to switch between Stable and Edge releases. Download office language pack mac. However, you can only have one version of Docker Desktop installed at a time. Switching between Stable and Edge versions can destabilize your development environment, particularly in cases where you switch from a newer (Edge) channel to an older (Stable) channel.
For example, containers created with a newer Edge version of Docker Desktop maynot work after you switch back to Stable because they may have been createdusing Edge features that aren’t in Stable yet. Keep this in mind asyou create and work with Edge containers, perhaps in the spirit of a playgroundspace where you are prepared to troubleshoot or start over.
Experimental features are turned on by default on Edge releases. However, when you switch from a Stable to an Edge release, you must turn on the experimental features flag to access experimental features. From the Docker Desktop menu, click Preferences > Command Line and then turn on the Enable experimental features toggle. Click Apply & Restart for the changes to take effect.
To safely switch between Edge and Stable versions, ensure you save images and export the containers you need, then uninstall the current version before installing another. For more information, see the section Save and Restore data below.
Mac Docker InstallSave and restore data
You can use the following procedure to save and restore images and container data. For example, if you want to switch between Edge and Stable, or to reset your VM disk:
For information on how to back up and restore data volumes, see Backup, restore, or migrate data volumes.
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