Server is a description oft function, formfactor. You are OK.

No it’s declared in the compose file or the docker run command and you specify a folder as target. No fstab needed.

Okay then.

Same. I’ll take dkms for zfs over snap every time.

Sounds like security by obscurity to me. But still, nice result.

I have all services in one compose file. Up -d starts them all. Servicename up -d is more selective.