Subhajit Ghosh ea98cf74aa Document valid chars in image name and tag

- Add link to valid image name and tag formats in referenced files
- Per review comments, updated docs to remove reference to `USERNAME` and
`REGISTRYHOST`.
- Per review comment, removed links from man page.
- Per review comment, added and updated examples on `docker tag`

Signed-off-by: Subhajit Ghosh <isubuz.g@gmail.com>

2016-05-21 19:49:19 +01:00

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% DOCKER(1) Docker User Manuals % Docker Community % JUNE 2014

NAME

docker-push - Push an image or a repository to a registry

SYNOPSIS

docker push [--help] NAME[:TAG] | [REGISTRY_HOST[:REGISTRY_PORT]/]NAME[:TAG]

DESCRIPTION

This command pushes an image or a repository to a registry. If you do not specify a REGISTRY_HOST, the command uses Docker's public registry located at registry-1.docker.io by default. Refer to docker-tag(1) for more information about valid image and tag names.

OPTIONS

--help Print usage statement

EXAMPLES

Pushing a new image to a registry

First save the new image by finding the container ID (using docker ps) and then committing it to a new image name. Note that only a-z0-9-_. are allowed when naming images:

# docker commit c16378f943fe rhel-httpd

Now, push the image to the registry using the image ID. In this example the registry is on host named registry-host and listening on port 5000. To do this, tag the image with the host name or IP address, and the port of the registry:

# docker tag rhel-httpd registry-host:5000/myadmin/rhel-httpd
# docker push registry-host:5000/myadmin/rhel-httpd

Check that this worked by running:

# docker images

You should see both rhel-httpd and registry-host:5000/myadmin/rhel-httpd listed.

Registry credentials are managed by docker-login(1).

HISTORY

April 2014, Originally compiled by William Henry (whenry at redhat dot com) based on docker.com source material and internal work. June 2014, updated by Sven Dowideit SvenDowideit@home.org.au April 2015, updated by Mary Anthony for v2 mary@docker.com June 2015, updated by Sally O'Malley somalley@redhat.com

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