Thank you, I try it maybe later... I installed the VMware Workstation Pro 17, it´s free yet. Installed, created a VM and routed the port to him. WORK. Thats all I want. The Proxmox is catastrophic with Net settings in GUI.
In Docker is very easy too, left:right side with ports to proxy it and work... Or anything like in GUI must be: Left side port coming-Right side out port, work.
I watched all videos on Youtube (the 1 hour videos too), in German language with subtitles too and nothing. Only make people angry.