Self-hosted Flatpak Repositories

I was curious if anyone has any advice on the following:

I have a home server that is always accessed by my main computer for various reasons. I would love to make it so that my locally hosted Gitea could run actions to build local forks of certain applications, and then, on success, trigger Flatpak to build my local fork(s) of certain programs once a month and host those applications (for local use only) on my home server for other computers on my home network to install. I'm thinking mostly like development branches of certain applications, experimental applications, and miscellaneous GUI applications that I've made but infrequently update and want a runnable instance available in case I redo it.

Anybody have any advice or ideas on how to achieve this? Is there a way to make a flatpak repository via a docker image that tries to build certain flatpak repositories on request via a local network? Additionally, if that isn't a known thing, does anyone have any experience hosting flatpak repositories on a local-network server? Or is there a good reason to not do this?