In Getting Started With Docker, I described the basics of downloading and running a Docker…
Docker Part 4: building and publishing custom docker images
For this tutorial, we will use the Whale Docker image. The Whale is the official mascot of Docker and the Whale docker image resembles the cowsay program which generates ASCII pictures of a cow in the terminal with a message. It can also generate pictures using pre-made images of other animals, such as Tux the Penguin, the Linux mascot.