nginx config

app_name

upstream unicorn {
  server unix:/tmp/unicorn.app_name.sock fail_timeout=0;
}

server {
  server_name domain.com www.domain.com;
  listen 80 default deferred;

  root /opt/apps/app_path/public;

  try_files $uri/system/maintenance.html $uri/index.html $uri @unicorn;

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

  location ^~ /assets/ {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
    add_header Access-Control-Allow-Origin *;
  }

  error_page 500 502 503 504 /500.html;
  client_max_body_size 4G;
  keepalive_timeout 10;
}