nginx.conf

# This is a template. Referenced variables (e.g. $RAILS_ROOT) need 
# to be rewritten with real values in order for this file to work. 
# To learn about all the directives used here, and more, see 
# http://nginx.org/en/docs/dirindex.html

# define our application server
upstream unicorn {
  server app:3000;
}

server {
  listen 80;
  # define our domain; CHANGE ME
  server_name example.myapp.com;

  # define the public application root
  root   $RAILS_ROOT/public;
  index  index.html;

  # define where Nginx should write its logs
  access_log $RAILS_ROOT/log/nginx.access.log;
  error_log $RAILS_ROOT/log/nginx.error.log;

  # deny requests for files that should never be accessed
  location ~ /\. {
    deny all;
  }

  location ~* ^.+\.(rb|log)$ {
    deny all;
  }

  # serve static (compiled) assets directly if they exist (for rails production)
  location ~ ^/(assets|images|javascripts|stylesheets|swfs|system)/ {
    try_files $uri @rails;

    access_log off;
    gzip_static on; # to serve pre-gzipped version

    expires max;
    add_header Cache-Control public;

    # Some browsers still send conditional-GET requests if there's a
    # Last-Modified header or an ETag header even if they haven't
    # reached the expiry date sent in the Expires header.
    add_header Last-Modified "";
    add_header ETag "";
    break;
  }

  # send non-static file requests to the app server
  location / {
    try_files $uri @rails;
  }

  location @rails {
    proxy_set_header  X-Real-IP  $remote_addr;
    proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
    proxy_pass http://unicorn;
  }
}