You could possibly also use proxmox and setup a VM for docker, games (use GPU passthrough), and TrueNAS. You also combine docker and games to same VM to use GPU for jellyfin. Only thing is I'm not quite sure how well your games will play (guess it depends on what games). Also keep in mind TrueNAS requires alot of memory (RAM). If you don't have enough for your games and TrueNAS you may have some performance issues.
You could also try running everything from within TrueNAS but personally I'm not a fan of it. I haven't tried TrueNAS scale yet but it does look promising.
You could possibly also use proxmox and setup a VM for docker, games (use GPU passthrough), and TrueNAS. You also combine docker and games to same VM to use GPU for jellyfin. Only thing is I'm not quite sure how well your games will play (guess it depends on what games). Also keep in mind TrueNAS requires alot of memory (RAM). If you don't have enough for your games and TrueNAS you may have some performance issues.
You could also try running everything from within TrueNAS but personally I'm not a fan of it. I haven't tried TrueNAS scale yet but it does look promising.