nginx + unicorn template

etc-nginx-conf.d-APPNAME.conf

upstream APPNAME_unicorn_server {
  server unix:/tmp/.APPNAME_sock_hodor;
}

server {
  listen PORT;
  server_name _;
  keepalive_timeout 5;
  root /home/APPNAME/current/public;

  location / {
    proxy_set_header X-Forwarded-For $http_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
  
    if (!-f $request_filename) {
      proxy_pass http://APPNAME_unicorn_server;
      break;
    }
  }

  error_page 500 502 503 504 /500.html;
  location = /500.html {
    root /home/APPNAME/current/public;
  }
}