Just tried it and a cloudron build --set-build-service mybuild.service.com --build-service-token <token-from-/app/data/tokendb.json> --set-repository <your.docker.registry>/<appname> --tag latest now starts the build and pushes it to the repo. Thanks a thousand times, @girish. This is awesome.
I did look into integrating with gogs when I did the GitLab integration. IIRC, the issue was that the gogs APIs for release tracking required a token (unlike GitHub and GitLab). This means that you have to create an account in another gogs/gitea instance (registration is frequently disabled) making it impossible to track. I think we might have to investigate a bit more and report the issue upstream first.