A simple registry container

This simple registry container is meant to be run locally. It is also meant to be accessed locally through localhost:5000. To use it, simply run:

docker compose up -d

Then you can tag your image and push it to this registry:

docker tag <image_name> localhost:5000/<repository_name>
docker push localhost:5000/<repository_name>

Replace <image_name> and <repository_name> according to your project requirements. Note that you can also use the same name for <image_name> and <repository_name>.

After pushing the docker image, you can use it by pulling from this repository:

docker pull localhost:5000/<repository_name>

This container will store data inside datadir/data, so that images pushed within can persist after the container is turned off.

Use case

For example, you have the following docker image: project_docker and you want it to be pushed to the registry. Then you can delete the local image, and later pull again from the registry. You can run:

docker compose up -d
docker tag project_docker localhost:5000/project_docker
docker push localhost:5000/project_docker

Then you delete the local image:

# deletes the local image and the retagged image
docker rmi project_docker localhost:5000/project_docker

Later you can pull it again from the registry:

docker pull localhost:5000/project_docker
docker images

That's all!

Reading materials:

• How to Use Your Own Registry
• Self hosted Docker registry