Docker Hub is a cloud-based repository of Docker images, in which users can create, test, and store images that can be downloaded by other communities. Before pushing image to Docker Hub, need to log in to it. This tutorial shows how to do that.
docker login command can be used to log in to Docker Hub. The command will prompt to enter a username and password. By default, credentials are stored in the file. So, no need to enter credentials next time when log in to the Docker Hub.
docker logout command can be used to log out from a Docker Hub. The command removes the credentials from the file.