Jellyfin: The Free Software Media System

I want to check out jellyfin. Now I'm wondering which installation method I should choose. I'm on Linux Mint 21.2. It's in the Mint Software Mager as a flatpak, then of course there's docker and I found a reasonably clear guide to install it from the repo. I just want to dip in my toes and get up and running with a little hassle as possible. I mainly want to be able to play media on my Chromecast, so I'm wondering if DNLA will work on flatpak? Otherwise that would be my preference. Are there any other considerations or pitfalls?

Update: somehow the flatpak didn't work for me. I'm sure the issues would have been fixable, but the documentation is pretty much nonexistent. In the end I went with docker and now have my server up and running.