nginx.conf

user user;
worker_processes 1;
events {
    worker_connections 1024;
}
http {
    server {
        listen 7860;
        server_name localhost;

        # Proxy / to Flask app
        location / {
            proxy_pass http://localhost:5000;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }

        # Proxy /vnc to noVNC
        location /vnc {
            proxy_pass http://localhost:6080;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
        }
    }
}