Proxmox V4 Nginx Reverse Proxy with VNC

After many many fails now a working one. This is for https://domain.tld/proxmox:

 location ~ ^/(?:proxmox|pve2|api2|novnc)$ {

    rewrite /(proxmox|pve2|api2|novnc) /$1/ permanent;

  }

  location ~ ^/(?:proxmox|pve2|api2|novnc)/ {

    rewrite /proxmox/(.*) /$1 break;

    rewrite /((?:pve2|api2|novnc)/.*) /$1 break;

    proxy_pass https://xxx.xxx.xxx.xxx:8006;

    proxy_read_timeout 90;

    proxy_redirect off;

    proxy_http_version 1.1;

    proxy_set_header Connection "upgrade";

    proxy_set_header Origin http://$host;

    proxy_set_header Upgrade $http_upgrade;

    proxy_set_header Host $host;

    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    proxy_set_header X-Forwarded-Proto $scheme;

  }