Docker Hub is a service provided by Docker for finding and sharing container images. The default version of Hub is the cloud-based REGISTRY that hosts all the public docker images LIKE Ubuntu, Linux, etc.

We need to create repositories to push and pull the docker images, allowing us to share container images within our team, organization, customers. In the case of public repositories, we can share the images with the entire Docker community.

Docker images are PUSHED to Docker Hub through the ‘docker push’ command. A single Docker Hub repository can hold many Docker images.

It also allows you to link repositories with GitHub in order to automate building, testing and deploying of our application images. It provides a centralized resource for container image discovery, distribution and change management, collaboration and workflow automation THROUGHOUT the development pipeline.

We can also USE third-party Repository tools like Nexus and JFrog Artifactory to store and manage docker images.