Configuring macOS Application Firewall to allow LAN access to container exposing port 80

@edst did you find a workaround on this?
I’m also interested on how to allow incoming connections on port 80 using the native MacOS firewall.

OS Version/build: MacOS High Sierra 10.13.3 (17D102)
Docker for Mac version: Docker version 18.03.0-ce, build 0520e24