How to self-host Omnivore?

I would like to deploy my own Omnivore instance on my NAS via Docker. In the repo, there actually is a Docker compose file, but unfortunately it's too complex for my current docker skills and I can't get it to run. :-( Does anybody happen to have achieved this and is willing to share their docker-compose.yml? I'd be super grateful.

(PS. I've just found out that there's also a Dockerfile and a script specifically for self-hosting; I haven't tried this option yet.)