When it comes to software the hype is currently setup a minimal Linux box (old computer, NAS, Raspberry Pi) and then install everything using Docker containers. I don’t like this Docker trend because it 1) leads you towards a dependence on property repositories and 2) robs you from the experience of learning Linux (more here) but I it does lower the bar to newcomers and let’s anyone setup something really fast.
In my opinion people should be very skeptical about everything that is “sold to the masses”, just go with a simple Debian system (command line only) SSH into it and install whatever is required / taking the time to actually learn Linux and whatnot.