4: The big picture
The aim of this chapter is to paint a quick big-picture of what Docker is all about before we dive in deeper in later chapters.
We’ll break this chapter into two:
- The Ops perspective
- The Dev perspective
In the Ops Perspective section, we’ll download an image, start a new container, log in to the new container, run a command inside of it, and then destroy it.
In the Dev Perspective section, we’ll focus more on the app. We’ll clone some app-code from GitHub, inspect a Dockerfile, containerize the app, run it as a container.
These two sections will give you a good idea of what Docker is all about and how the major components fit together. It’s recommended that you read both sections to get the dev and the ops perspectives. DevOps anyone?
Don’t worry if some of the stuff we do here is totally new to you. We’re not trying to make you an expert in this chapter. This is about giving you a feel of things —...
