Linux distro shouldn't really matter here. Given what you've said, I would recommend using Debian just because it's the most popular server distro and a lot of server guides will either assume you're on Debian, or have instructions for Debian. For instance, if you see suggestions to install software using sudo apt install software-name-here
, that's for Debian.
You would probably want to use Docker for this. There are instructions on how to install Jellyfin with Docker here.
I would disagree, and I personally know people who have unionised IT workers. I also personally know people who have unionised workers at small companies. I don't understand why you would say unionisation is not relevant to you? If you're a worker then it is relevant.