Since we started committing generated files as well we can mark them as
derived so that they appear collapsed in the diff, reducing noise while
reviewing.
This is based on @NicolasDorier's excellent proposal for a Dockerfile, sans the
writing of a config file.
Co-authored-by: Nicolas Dorier <nicolas.dorier@gmail.com>
Co-authored-by: Christian Decker <decker.christian@gmail.com>
Signed-off-by: Christian Decker <decker.christian@gmail.com>