A single config file in a directory beats all.

All my home server apps are in /apps/app-name/ all have a docker config... All data and configurations are mounts under that directory or to my library. It's really straight forward.

I don't have to hunt for different configuration files, each app has what it needs.

I can spin down, move and get back up in a minute or two. All in a consistent way to the platform.

The overhead for Docker isn't near a full vm, it's maybe 2-3% if that.