Hi @Terrapop
There are plenty of great tutorials on meta on how to setup Discourse in a “two container” configuration behind a reverse proxy.
You can try searching on meta:
two container reverse proxy
Hope this helps.
Please note for simply staging, many people do not set up “two containers” and only do this in production; but if you want to stage “exact as in production” then “two containers” is certainly a great way to go. However, you do not need “two containers” to run a web app behind a reverse proxy. I regularly run ROR and Docker web apps behind a reverse proxy in both production and development.