How to expose Docker containers created with Portainer?

Hello everyone! I want to expose docker containers created with Portainer (Transmission, Plex server, etc).

My idea is to expose those docker containers to be available as a Panel in the Sidebar, not just as iframe_panel because I want to access them outside my local network (I’m using Nabu Casa btw).

How can achieve this? Using Ingress? How?

Thanks for the help!