I've gone down this path a while back and self-host Gitea and other things: https://taoofmac.com/space/blog/2022/02/12/1930

I will be moving my KVM/LXD setup to Proxmox eventually (probably when I get new hardware) and am looking into low-wattage servers (ARM would be nice, to continue the grand tradition of running services on an NSLU2 a few years back, but there just aren't any good ARM server boards with lots of RAM and NVME storage).