The Docker Hub is a central place used for keeping the Docker images either in a public or private repository. The Docker Hub provides features, such as a repository for Docker images, user authentications, automated image builds, integration with GitHub or Bitbucket, and managing organizations and groups. The Docker Registry component of the Docker Hub manages the repository.

Docker Registry is a storage system used to store the images. Automated build is a feature of the Docker Hub, which is not open source yet, at the time of writing this book. The following diagram shows the typical features:

In order to work with the Docker Hub, you have to register with the Docker Hub, and create an account using the link at https://hub.docker.com/account/signup. You can update the Username, Password, and Email Address, as shown in the following screenshot:

After completing the Sign Up process, you need to complete the verification received in an e-mail. After the e-mail...