Docker intermission

In Chapter 7, Deploying the Code, we will have a look at a new and exciting way to package our applications, called Docker.

In this chapter, we have a similar challenge to solve. We need to be able to try out a couple of different Git server implementations to see which one suits our organization best.

We can use Docker for this, so we will take this opportunity to peek at the possibilities of simplified deployments that Docker offers us.

Since we are going to delve deeper into Docker further along, we will cheat a bit in this chapter and claim that Docker is used to download and run software. While this description isn't entirely untrue, Docker is much more than that. To get started with Docker, follow these steps:

1. To begin with, install Docker according to the particular instructions for your operating system. For Red Hat derivatives, it's a simple dnf install docker-io command.

   Note

   The io suffix might seem a bit mysterious, but there was already a Docker package that implemented...