Change the port from 3000 or 3001 to 80 on LXCs like Homarr or Uptime Kuma

[DorjeDorf]

I am loving the scripts and they have certainly made my life so much easier. Thank you for those.

I have been wondering, however, about the seemingly default port for most WebUIs offered by the scripts here. They are usually 3000 or 3001 - even when the original apps or their docker images offer different ports.

Is there an easy way to change the ports to default 80?
Granted, I've only just started with Proxmox, so I might not know enough, but from what I see - LXCs get their own IPs, so we don't need to worry about port sharing and can instead use the default 80 for most things.

How can that be achieved?

With homarr, I tried editing the .env file in /opt/homarr, but that didn't help.

Any hints would be most appreciated.