nginx.conf

events {}

http {
    server {
        listen 7860;
        server_name localhost;

        location / {
            root /usr/share/nginx/html;
            index index.html;
        }
    }

    server {
        listen 7777;

        location / {
            proxy_pass http://localhost:7777;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
        }
    }
}