Docker Registry #

Central repository of Docker images.

Naming #

Convention is to reference images using the following format: <user/account>:<image/repository>

User/account is what’s present on DockerHub.

By default, images are stored on Dockerhub at docker.io, with a complete path to an image of: docker.io/<user/account>/<image/repository>

In any registry, particular images can be set as private.

Private registries can also be set up as needed.

Private images require credentialing for access.

Can also locally deploy private registry, using image registry, which defaults to port 5000.

dock run -d -p 5000:5000 --name registry

To push images to local private registry, first tag image with a local URL:

docker image tag <image name> localhost:5000/<image name>

Then push the image:

docker push localhost:5000/<image name>

Then the image can be pulled:

docker pull localhost:5000/<image name>

^ Altneratively, the localhost can be replaced with the host IP address.