Self-host templates without Caddy

i was looking for anyone who wanted a more agnostic approach to self hosting too! i've found a couple of comments mentioning people putting it behind nginx, even in another issue, but no actual steps or a rough template of the expected headers and parameters fluxer actually wants; im super stoked for the official launch of the docs -albeit still in progress-, but being able to switch caddy for any other reverse proxy would be awesome