Would we like to have a gitlab-runner image?
Gitlab offers one here. But it’s “Kraut und Rüben”, the build is complicated, the setup is weird. Entrypoint has chmod=777. You have to intervene by hand before you can use it (gitlab-runner register). They write some kind of default config (you can’t set concurrency at runtime), even if you delete it in the build.
All in all we could really benefit from an image running on s6.
I could build the image, if there is any interest at all.