A Docker image registry is a place the docker images are kept. 

A developer may immediately utilize the pictures kept in the registry rather than turning the programs to containers every single time. 

 

• public Registries: -Different Vendors provide Registries for different collections of images, including Azure Container Registry.
  • Docker hub is the most well-known and popular public registry available; this image registry can be public or private.
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  • Docker offers a public cloud-based registry for storing public images of the containers together with the ability to locate and share them. Using the docker push command, the images may be sent to Docker Hub.
• private Registries: - Alternatively, enterprises can have private registry on-premises for their own Docker images.