A Docker Registry is a place where Docker images can be stored in order to be publicly or privately found, accessed, and used by software developers worldwide for quickly crafting fresh and composite applications without any risks. Because all the stored images will have gone through multiple validations, verifications, and refinements, the quality of those images is really high. You can dispatch your Docker image to the registry so that it is registered and deposited using the docker push subcommand. You can download Docker images from the registry using the docker pull subcommand.

Docker Registry could be hosted by a third party as a public or private registry, like one of the following registries:

• Docker Hub
• Quay
• Google Container Registry
• AWS Container Registry

Every institution, innovator, and individual can have their own Docker Registry to stock up their images for internal and/or external access and usage.