RepositoriesEstimated reading time: 5 minutes
Docker Hub repositories allow you share container images with your team, customers, or the Docker community at large.
Docker images are pushed to Docker Hub through the
command. A single Docker Hub repository can hold many Docker images (stored as
To create a repository, sign into Docker Hub, click on Repositories then Create Repository:
When creating a new repository:
The repository name needs to be unique in that namespace, can be two to 255 characters, and can only contain lowercase letters, numbers or
The description can be up to 100 characters and is used in the search result.
You can link a GitHub or Bitbucket account now, or choose to do it later in the repository settings.
After you hit the Create button, you can start using
docker push to push
images to this repository.
Pushing a Docker container image to Docker Hub
To push an image to Docker Hub, you must first name your local image using your Docker Hub username and the repository name that you created through Docker Hub on the web.
You can add multiple images to a repository by adding a specific
them (for example
docs/base:testing). If it’s not specified, the tag defaults
Name your local images using one of these methods:
When you build them, using
docker build -t <hub-user>/<repo-name>[:<tag>]
By re-tagging an existing local image
docker tag <existing-image> <hub-user>/<repo-name>[:<tag>]
docker commit <existing-container> <hub-user>/<repo-name>[:<tag>]to commit changes
Now you can push this repository to the registry designated by its name or tag.
$ docker push <hub-user>/<repo-name>:<tag>
The image is then uploaded and available for use by your teammates and/or the community.
Private repositories let you keep container images private, either to your own account or within an organization or team.
To create a private repository, select Private when creating a repository:
You can also make an existing repository private by going to its Settings tab:
You get one private repository for free with your Docker Hub user account (not usable for organizations you’re a member of). If you need more private repositories for your user account, upgrade your Docker Hub plan from your Billing Information page.
Once the private repository is created, you can
pull images to and
from it using Docker.
Note: You need to be signed in and have access to work with a private repository.
Note: Private repositories are not currently available to search through the top-level search or
You can designate collaborators and manage their access to a private repository from that repository’s Settings page. You can also toggle the repository’s status between public and private, if you have an available repository slot open. Otherwise, you can upgrade your Docker Hub plan.
Collaborators and their role
A collaborator is someone you want to give access to a private repository. Once
designated, they can
pull to your repositories. They are not
allowed to perform any administrative tasks such as deleting the repository or
changing its status from private to public.
Note: A collaborator cannot add other collaborators. Only the owner of the repository has administrative access.
You can also assign more granular collaborator rights (“Read”, “Write”, or “Admin”) on Docker Hub by using organizations and teams. For more information see the organizations documentation.
Viewing repository tags
Docker Hub’s individual repositories view shows you the available tags and the size of the associated image. Go to the Repositories view and click on a repository to see its tags.
Image sizes are the cumulative space taken up by the image and all its parent
images. This is also the disk space used by the contents of the
created when you
docker save an image.
To view individual tags, click on the Tags tab.
Select a tag’s digest to view details.
Searching for Repositories
You can search the Docker Hub registry through its search interface or by using the command line interface. Searching can find images by image name, username, or description:
$ docker search centos NAME DESCRIPTION STARS OFFICIAL AUTOMATED centos The official build of CentOS. 1034 [OK] ansible/centos7-ansible Ansible on Centos7 43 [OK] tutum/centos Centos image with SSH access. For the root... 13 [OK] ...
There you can see two example results:
The second result shows that it comes from the public repository of a user,
ansible/, while the first result,
centos, doesn’t explicitly list a
repository which means that it comes from the top-level namespace for official
/ character separates a user’s
repository from the image name.
Once you’ve found the image you want, you can download it with
docker pull <imagename>:
$ docker pull centos latest: Pulling from centos 6941bfcbbfca: Pull complete 41459f052977: Pull complete fd44297e2ddb: Already exists centos:latest: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security. Digest: sha256:d601d3b928eb2954653c59e65862aabb31edefa868bd5148a41fa45004c12288 Status: Downloaded newer image for centos:latest
You now have an image from which you can run containers.
Your repositories can be starred and you can star repositories in return. Stars are a way to show that you like a repository. They are also an easy way of bookmarking your favorites.Docker, docker, trusted, registry, accounts, plans, Dockerfile, Docker Hub, webhooks, docs, documentation