How can I share port 443 Xray|x-ui to work in docker with other services/sites?

[rexen-pro]

I have launched x-ui in Docker with the recommended settings. And I got the error: "443 already in use". I have other web-services and sites running in other Docker-containers. I do the routing using Nginx-Proxy-Manager, which is also running in a container (I have no any proxy at host). And at the my domain name registrar, I manage the A-records of the subdomains of my domain. What are the options to avoid container conflicts - because port 443 is needed for Nginx? How do I use my own site (running in a nearby container) as a DEST?