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:

1. At build time (e.g., docker build -t IMAGENAME),
2. When committing a container (e.g., docker commit CONTAINERID IMAGENAME) or
3. 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 Repositories.

For more information see Working with Repositories