This example shows how to use Docker to compile a file inside a container and return the results back to the host filesystem. Example use cases include packaging existing programs for different package managers where we maybe don’t want to spin up a full VM for each target distribution.
To obtain an out/hello.txt file in the current working directory, where the
file was created inside a container we’ll build and spin up, run:
$ make
Changing the text written to the file in builder.sh will not cause a rebuild
of the container, but re-running it will pick up any changes we make.