# nginx.conf
server {
  listen 80;
  server_name _;

  root /usr/share/nginx/html;
  index index.html;

  add_header X-Frame-Options "SAMEORIGIN";
  add_header X-Content-Type-Options "nosniff";
  add_header Referrer-Policy "no-referrer-when-downgrade";

  location / {
    try_files $uri $uri/ =404;
  }
}