BATS (Bash Automated Testing System) allows you to have quick and easy tests in a very natural language, without the need of a lot of dependencies. BATS can also grow in complexity as per your requirement. In this section, we'll use Docker with Docker Compose to handle the build and a Makefile to tie the dependencies between the build process and the BATS testing process; this will make it easier to later integrate this process into a CI system.
To step through this recipe, you will need:
BATS Version 0.4.0 is used in this chapter.
Let's start with this simple Dockerfile that ...