nginx.conf

upstream app {
  server unix:/usr/local/nginx/html/apps/service/shared/tmp/sockets/unicorn.app.sock fail_timeout=0;
}

server {
  listen    80;
  server_name   service.dbsj.org;
  client_max_body_size 4G;

  root /usr/local/nginx/html/apps/service/current/public;
  try_files $uri/index.html $uri @app;

  location @app {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
    proxy_pass http://app;
  }

  error_page 500 502 503 504 /500.html;
  location = /500.html {
    root /usr/local/nginx/html/apps/service/current/public;
  }
}