How to connect Rocket.Chat to port 80 or global network?

I cloned Rocket.Chat git repo and ran docker-compose up -d with default settings. Can access via port example.com:3000 but not example.com. Tried modifying the docker-compose.yml and added network parameters from existing EE site’s .yml file but no dice. Any help would be appreciated.

Got it to work with SSL by creating a dummy ee site html container then referenced its .yml parameters to rocket’s .yml.