Can you explain what is meant by Docker registry?

A Docker registry is a server-side storage for Docker images. It allows storing, distributing, and managing container images.

Main functions of Docker registry:

• Storage of images that can be pulled or pushed.
• Version management with tags.
• Centralized access to images for different users and systems.

A public Docker registry example is Docker Hub, but private registries can also be set up for internal use.

Usage example:

docker pull nginx:latest   # download nginx image from registry

docker push myregistry.com/myimage:tag  # upload image to private registry