GitLab

There are still references in urls with /cgit in the path, but they are
no longer necessary or even work.

Redirect web urls with /cgit/ to the root.

when doing full mirror from gitlab it will fetch all refs which will
also include merge requests and similar.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

* use sockets instead of tcp
* switch to async green
* temporary set fd limit until upstream fix
* add traefik config
* switch back to compose v2