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moby--moby/docs/reference/commandline/pull.md
Derek McGowan 259cadb0b1 Rename to flags and environment variables to content trust 
Update help line to allow 90 characters instead of 80

The trust flag pushes out the help description column wider, requiring more room to display help messages.

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
2015-07-24 16:31:18 -07:00

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pull

Usage: docker pull [OPTIONS] NAME[:TAG] | [REGISTRY_HOST[:REGISTRY_PORT]/]NAME[:TAG]

Pull an image or a repository from the registry

  -a, --all-tags=false          Download all tagged images in the repository
  --disable-content-trust=true  Skip image verification

Most of your images will be created on top of a base image from the Docker Hub registry.

Docker Hub contains many pre-built images that you can pull and try without needing to define and configure your own.

It is also possible to manually specify the path of a registry to pull from. For example, if you have set up a local registry, you can specify its path to pull from it. A repository path is similar to a URL, but does not contain a protocol specifier (https://, for example).

To download a particular image, or set of images (i.e., a repository), use docker pull:

$ docker pull debian
# will pull the debian:latest image and its intermediate layers
$ docker pull debian:testing
# will pull the image named debian:testing and any intermediate
# layers it is based on.
$ docker pull debian@sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
# will pull the image from the debian repository with the digest
# sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
# and any intermediate layers it is based on.
# (Typically the empty `scratch` image, a MAINTAINER layer,
# and the un-tarred base).
$ docker pull --all-tags centos
# will pull all the images from the centos repository
$ docker pull registry.hub.docker.com/debian
# manually specifies the path to the default Docker registry. This could
# be replaced with the path to a local registry to pull from another source.
# sudo docker pull myhub.com:8080/test-image