Change the default port 443 to a custom port

[CR2025]

I can't use port 443 on public address, so I set port forwarding, public address port 1443 to bbb-server port 443, Greenlight work well，but I can’t start meeting, the URL path always missing custom port
for Example "https://[public-address]:1443/rooms" work well, when I click “start meeting” the URL show "https://[public-address]/html5client/join", change to port 443