moby--moby/contrib/man/md/docker-push.md

% DOCKER(1) Docker User Manuals % William Henry % APRIL 2014

NAME

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

SYNOPSIS

docker push NAME[:TAG]

DESCRIPTION

Push an image or a repository to a registry. The default registry is the Docker Index located at index.docker.io. However the image can be pushed to another, perhaps private, registry as demonstrated in the example below.

EXAMPLE

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:

# 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. Default Docker commands will push to the default index.docker.io registry. Instead, push to the local registry, which is on a host called registry-host*. 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.

HISTORY

April 2014, Originally compiled by William Henry (whenry at redhat dot com) based on docker.io source material and internal work.