502 error when accessing http-bind

Hello,

I’ve been browsing through solutions, but got no results in trying what was listed in other topics.

I installed jitsi-meet through docker on a fresh CentOS 8 server with a subdomain pointing to its IP. After the installation, the website loads at [subdomain].[domain]:8443, but I get an 502 error when connecting to a meeting room, the same results when I try to access it via https://[domain]:8443/http-bind.

I’m not entirely sure on how to check prosidy logs with containers, as I am somewhat new to those. Does anyone have some pointers in what I should try next?

EDIT:
This is the error nginx throws:

2020/11/19 12:38:32 [error] 259#259: *10 connect() failed (113: No route to host) while connecting to upstream, client: [address], server: _, request: “POST /http-bind?room=newroom HTTP/2.0”, upstream: “http://172.21.0.3:5280/http-bind?room=newroom”, host: “[domain]:8443”, referrer: “https://[domain]:8443/newroom”