A Docker registry is a repository for storing and distributing Docker images. It's like a central library for container images, where you can find, share, and pull images for your applications.  

Public vs. private docker registries

There are two main types of Docker registries: public and private. Public registries, like Docker Hub, are open to everyone and anyone can pull images from them. Private registries, on the other hand, are restricted to specific users or organizations. They are often used to store images that are not intended for public distribution.

Benefits of using Docker registries

There are many benefits to using Docker registries, including:  

• Centralized location for images: Docker registries provide a central location for developers to find and download images. This makes it easy to find the images you need and to keep track of different versions of images.
• Improved security: Docker registries can help to improve security by allowing you to control who has access to your images. You can also use Docker registries to scan images for vulnerabilities. ‍
• Faster CI/CD pipelines: Docker registries can help to speed up your CI/CD pipelines by making it easy to share images between different stages of the pipeline.
• Increased control over images: Docker registries give you more control over your images. You can decide who can access your images, what versions of your images are available, and how your images are used.