On this! https://www.friendlyelec.com/index.php?route=product/product&product_id=289

It comes with an adjusted OpenWrt fork so it uses opkg/procd/other owrt tooling. I implemented dinit ( https://github.com/davmac314/dinit ) as a service and use it to run "non-router things" - like bitcoin, lightning, ipfs, ... Anything that is either not in the OpenWrt repos or that I wrote myself or installed through other means. :)

Well, and docker/docker-compose also exists for Jellyfin and friends.