server {
  listen web_port;
  sendfile on;
  tcp_nopush on;
  tcp_nodelay on;
  keepalive_timeout 65;

  root /app;

  error_page  404              /usr/share/nginx/html/404.html;

  location = /favicon.ico { access_log off; log_not_found off; }
  location = /robots.txt  { access_log off; log_not_found off; }

  location / {
      add_header Access-Control-Allow-Origin *;
      add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
      add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
      if ($request_method = 'OPTIONS') {
          return 204;
      }

      try_files $uri $uri/ /index.html;
  }

}
server {
  listen 443 ssl;
  sendfile on;

  ssl                  on;
  ssl_certificate      /etc/ssl/certificate.crt; 
  ssl_certificate_key  /etc/ssl/private.key;

  tcp_nopush on;
  tcp_nodelay on;
  keepalive_timeout 65;

  root /app;

  error_page  404              /usr/share/nginx/html/404.html;

  location = /favicon.ico { access_log off; log_not_found off; }
  location = /robots.txt  { access_log off; log_not_found off; }

  location / {
      add_header Access-Control-Allow-Origin *;
      add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
      add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
      if ($request_method = 'OPTIONS') {
          return 204;
      }

      try_files $uri $uri/ /index.html;
  }

}