Dockerfiles can be viewed as an image representation. They provide a simple syntax for building images and they are a great way to automate and script the images creation. If you are really serious about Docker, you should master the Dockerfile syntax.
To help you learn the Dockerfile syntax, we did put together a very easy to follow tutorial. In the next couple of months we will release several levels, one at a time, so you could master the Dockerfile syntax quickly, instruction by instruction. At the end of each level you will find tests to check your knowledge.
Ready? Start Level 0