nginx.conf

worker_processes 1;
daemon  off;

events {
    worker_connections  1024;
}

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

    sendfile        on;

    gzip            on;
    gzip_http_version   1.1;
    gzip_comp_level     2;
    gzip_types  text/plain
                application/xhtml+xml
                text/xml
                application/xml
                application/xml+rss;

    server {
        listen      <%= ENV['PORT'] %>;
        server_name 127.0.0.1;

        location / {
            root    /app/Build;
            index   index.html index.htm;
            port_in_redirect off;
        }
    }
}