One day I will look into NixOS, I am eyeing it for a while now, but I don’t feel confident enough with my Linux skills to switch. However, I do agree with you, and it’s exactly what I am doing, stripping the compose files of all the CasaOS stuff, use one per service, and versioning them in git. I am also learning about .env files and other things that I wasn’t really aware of before, it’s fun and very customizable :)

Thanks for all the suggestions :)