Feature Request: Proxy Hass.io Add-ons that use other ports

Feature Request: A system that allows add-ons to come up on other ports to be accessible through some sort of proxy so that they can be accessed via the main Home Assistant web app without the need to connect to a special port.

There are a lot of really cool and useful Hass.io add-ons that have been released, however they run in their own docker containers on another port on the Pi. This makes it extremely difficult to use these outside of your home network without poking tons of random holes through the firewall and setting up passwords for each add-on. Not only is that tedious to maintain, I really don’t want to open up a Terminal or IDE to the entire internet which has access to my files.