How to disable mailer service? (Docker)

I would like to disable the pydio cells mailer service(s). I’m using docker-compose to spin this up using image pydio/cells:latest

Can anyone tell me how I can disable the mailer service from running at startup? I think (from digging around) they are / pydio.grpc.mailer

I saw somewhere on the forum that this might help: cells start --exclude=pydio.grpc.mailer but I don’t know how to implement this using my docker-compose method.

Thank you!