In the link you shared I mention how to get the docker-compose file by running `supabase eject`
I probably can't satisfy you, but I'll make our intentions very clear to everyone else reading this:
https://github.com/supabase/supabase/commit/913add2e3ca45e55...
Sorry for the lack of documentation - we will add more docs and make everything easier to use before a "Launch week" that we have planned on the last week of March.