nginx.conf

worker_processes 1;
pid /tmp/nginx.pid;
error_log /dev/stderr info;

events {
    worker_connections 512;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;
    access_log /dev/stdout;
    sendfile on;
    keepalive_timeout 65;

    client_body_temp_path /tmp/nginx-client;
    proxy_temp_path /tmp/nginx-proxy;

    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }

    server {
        listen 7860;
        server_name _;
        server_tokens off;

        auth_basic "Private browser";
        auth_basic_user_file /home/user/.browser.htpasswd;

        add_header X-Content-Type-Options nosniff always;
        add_header Referrer-Policy no-referrer always;
        add_header Cache-Control "no-store" always;

        location = /healthz {
            auth_basic off;
            default_type application/json;
            return 200 '{"status":"alive"}';
        }

        location = / {
            return 302 /vnc.html?autoconnect=true&resize=scale&path=websockify;
        }

        location = /websockify {
            proxy_pass http://127.0.0.1:6080;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
            proxy_set_header Host $host;
            proxy_read_timeout 86400s;
            proxy_send_timeout 86400s;
            proxy_buffering off;
        }

        location / {
            root /usr/share/novnc;
            try_files $uri $uri/ =404;
        }
    }
}