server {
  listen       80;
  server_name  localhost;

  server_tokens off;

  location / {
    root   /usr/share/nginx/html;
#     index  index.html;
    try_files $uri $uri/ @index;
  }

  location @index {
    # add_header Cache-Control no-cache;
    server_tokens off;
    expires -1;
    root   /usr/share/nginx/html;
    try_files /index.html =404;
  }

  # redirect server error pages to the static page /50x.html
  #
  error_page   500 502 503 504  /50x.html;
  location = /50x.html {
    root   /usr/share/nginx/html;
  }
}