All the examples we’ve seen so far are differing only in the source. The destination is always the same. No matter whether ConfigMap is created from a file, from a directory, from literal values, or from an environment file, it perpetually resulted in one or more files being injected into a container.

This time we’ll try something different. We’ll see how we can convert a ConfigMap into environment variables.

Looking into first definition

Let’s take a look at a sample definition of alpine-env.yml file.