Error starting userland proxy: listen tcp4 0.0.0.0:443: bind: address already in use

I’ve seen that document but shouldn’t changing the app.yml have an effect on the ports used or is it ignored? Discourse is the first app I try with some kind of “hard-coded” port I can’t change.

I really don’t like to put another piece of software between my customers and my website which is happily up and running, I’d rather map in Apache a subdomain to discourse

And what if I get another application which behaves like this and is forced to run on port 443?