NC itself is discussable, but desktop/android clients are awesome. Autoupload and files preview without download are great features.
Just specaluting.. is it possible to mount NFS through systemd and make docker service dependent from that mount?
You could take a look here https://forums.serverbuilds.net/c/builds/18
I suggest LGA1151/1200 so it's more power efficient in idle
You can take a look at Aoostar R1, there is 2 bay option with Intel N100
You can check ETA Prime on YT, there are tests of some small gaming PCs
My advise is to avoid Chinese (or similar) bikes because they have problems on distance. I'm riding now on Nakto Fashion and already did reparation in mechanical part and re-soldering some wires in battery and steel some issues pending..