I thought about udocker for termux. I went with plain old ftp :)

You can just install it with pkg in jellyfin-server. I actually run a lot of stuff on termux. Like Forgejo, syncthing, Readeck, TOR as dns resolver
But i dont want to set it up again

My list is weird because I reused an android device with termux for this and it runs very well.

1. Readeck (bookmarking and archiving)
2. Syncthing
3. Transmission (torrent)
4. Foegejo (fuck github, the software behind codeberg)
5. TOR (as a socks5 proxy and DNS resolver)
6. Kiwix of you count that
   Edit: now i have jellyfin running
   I’m always looking for stuff to host but limited for the host android device, as it’s also my “phone”. Some ports like 53 is blocked so can’t use pihole or similar