nginx.conf

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
   # passenger_root /home/deployer/.rvm/gems/ruby-2.3.1/gems/passenger-5.0.30;
   # passenger_ruby /home/deployer/.rvm/gems/ruby-2.3.1/wrappers/ruby;

    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    gzip  on;
    upstream unicorn {
      server unix:/tmp/unicorn.имя_приложения.sock fail_timeout=0;
    }
    server {
        listen       80;

        server_name  www.хост.ru;
        root /home/deployer/имя_приложения/current/public;
        #passenger_enabled on;
        client_max_body_size 50M;
        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location ^~ /assets {
            gzip_static on;
            expires max;
            add_header Cache-Control public;
        }
        try_files $uri/index.html $uri @unicorn;
        location @unicorn {
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header Host $http_host;
          proxy_redirect off;
          proxy_pass http://unicorn;
        }
    #Далее идут закомментированные дополнительные настройки
  }