Allow for adding scripts
Make it possible for the user to provide scripts in a template folder. For now, just copy them to a standard path in the rendered repo.
A replacement for the old instance build runner (old tags dind/docker-in-docker) is available. For details see https://git.geomar.de/open-source/gitlab-docu/-/wikis/build_runner
Make it possible for the user to provide scripts in a template folder. For now, just copy them to a standard path in the rendered repo.