Yes the build service is only optional in case a local docker setup is not viable or the upload speed is low. But otherwise by default it would build it locally and then push to the configured repository.

@girish works perfectly fine now, thanks for the quick fix

@murgero yes, it should be safe to deploy within existing apps.

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.