Put your request in caddy forums and tag mholt he is very responsive . You could also sign up for open ai (chat gpt) feed it the compose.yml file in that github and ask it "what does this yml do" let it answer then ask "what modifications would be needed to make a similar script or yml that uses caddy instead of traffik" when it gives you a working output (try it ) and go back to forums and say I want to make somethng like this and get feedback . Rinse and repeat and it may already exist as a combo of adding caddy packages + you just need the right caddyfile or json + addons to work with what may already exist as a feature with some docker tweaks. I fixed a few scripts / yml configs like this that I prob wouldnt havent gotten close to working without hours of headbanging / trial and error.

I will make sure to post this question in the Caddy forum. I just wanted to know the opinions and experiences of other people who also had this need, that's why I opened this Reddit thread.
Thanks!