Sorry my first question is a really noob one, but I just wanted to double-check. I'd gotten nginx to reverse proxy to a half dozen Docker containers about 6 months ago and then I had data corruption on the drive and my config got lost. I'm re-learning and I have docker-compose with docker-gen and letsencrypt seemingly working - at least I can reach web pages at whoami.mydomain.org and portainer.mydomain.org, but trying to access nginx via port 80, 443, or 8080 gives me a 503 error. I think that's by design, but again, I just wanted to check.

On a side note, if it is by design, is there some sort of dash for nginx (again, non-Plus) that can be added to my config or should I just mainly focus on Portainer for management of my containers?

I guess the answer is no, unless you enable the stub status page that doesn't provide nearly the detail/admin capability that some alternatives do. I'll look at using one of these multi-container docker hub solutions to add it, or an alternative reverse proxy. Glad to know it is at least working properly.