29d01b7dde
We now advise people to configure docker group and add to sudo. Mac shouldn't use sudo. Removed sudo from command examples. Left in installation to be removed in installation doc sweep -- removing requires finer grain control. Signed-off-by: Mary Anthony <mary@docker.com>
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page_title: Repository page_description: Definition of an Repository page_keywords: containers, concepts, explanation, image, repository, container
Repository
Introduction
A repository is a set of images either on your local Docker server, or shared, by pushing it to a Registry server.
Images can be associated with a repository (or multiple) by giving them an image name using one of three different commands:
- At build time (e.g.,
docker build -t IMAGENAME), - When committing a container (e.g.,
docker commit CONTAINERID IMAGENAME) or - When tagging an image id with an image name (e.g.,
docker tag IMAGEID IMAGENAME).
A Fully Qualified Image Name (FQIN) can be made up of 3 parts:
[registry_hostname[:port]/][user_name/](repository_name:version_tag)
username and registry_hostname default to an empty string. When
registry_hostname is an empty string, then docker push will push to
index.docker.io:80.
If you create a new repository which you want to share, you will need to
set at least the user_name, as the default blank user_name prefix is
reserved for official Docker images.
For more information see Working with Repositories