nginx.conf

worker_processes 1;
daemon off;

error_log <%= ENV["APP_ROOT"] %>/nginx/logs/error.log;
events { worker_connections 1024; }

http {
  log_format cloudfoundry '$http_x_forwarded_for - $http_referer - [$time_local] "$request" $status $body_bytes_sent';
  access_log <%= ENV["APP_ROOT"] %>/nginx/logs/access.log cloudfoundry;
  default_type application/octet-stream;
  include mime.types;
  sendfile on;
  gzip on;
  tcp_nopush on;
  keepalive_timeout 30;
  port_in_redirect off; # Ensure that redirects don't include the internal container PORT - <%= ENV["PORT"] %>

  server {
    listen <%= ENV["PORT"] %>;
    server_name localhost;

    location / {
      root <%= ENV["APP_ROOT"] %>/public;
      index index.html index.htm Default.htm;
      <% if File.exists?(File.join(ENV["APP_ROOT"], "nginx/conf/.enable_directory_index")) %>
      autoindex on;
      <% end %>
      <% if File.exists?(auth_file = File.join(ENV["APP_ROOT"], "nginx/conf/.htpasswd")) %>
      auth_basic "Restricted";                                #For Basic Auth
      auth_basic_user_file <%= auth_file %>;  #For Basic Auth
      <% end %>
      <% if ENV["FORCE_HTTPS"] %>
      if ($http_x_forwarded_proto = http) {
        return 301 https://$host$request_uri;
      }
      <% end %>

      #CORS configuration
      if ($request_method = 'OPTIONS') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Content-Type' 'text/plain charset=UTF-8';
        add_header 'Content-Length' 0;
        return 204;
      }
      if ($request_method = 'GET') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
      }
    }
  }
}