unicorn conf for nginx

redmine.nginx.conf

upstream redmine_stack {
  server unix:/usr/local/share/redmine/tmp/pids/unicorn.sock fail_timeout=0;
}
server {
  client_max_body_size 100M;
  server_name alanadi.com;
  keepalive_timeout 5;
  root /usr/local/share/redmine/public;
  try_files $uri/index.html $uri.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://redmine_stack;
  }
  error_page 500 502 503 504 /500.html;
  location = /500.html {
    root /usr/local/share/redmine/public;
  }
}