Docker Architecture

Now that we’ve got Docker installed, and talked a little bit about what Docker is,let’s talk about what Docker does. The Docker Flow, the fundamental concept, in Docker, it all begins with an image. An image is every file that makes up just enough of the operating system to do what you need to do. Traditionally you’d install a whole operating system with everything for each application you do. With Docker you pair it way down so that you have a little container with just enough of the operating system to do what you need to do, and you can have lots and lots of these efficiently on a computer.