A rails proxy written in node.js for testing assets. No need for apache.

package.json

{
  "name": "rails-proxy",
  "version": "0.0.1",
  "dependencies": {
      "http-proxy": "*",
      "node-static": "*"
  },
  "engines": { "node": ">= 0.4.4" }
}

proxy.js

var httpProxy = require('http-proxy')
  , static = require('node-static')

var file = new(static.Server)('./public/assets');
require('http').createServer(function (request, response) {
    request.addListener('end', function () {
        console.log("Fetching /assets/" + request.url);
        file.serve(request, response);
    });
}).listen(7000);
console.log("Starting asset static server on port 7000");

var options = {
  router: {
    'localhost/assets': '0.0.0.0:7000',
    'localhost': '0.0.0.0:3000'
  }
};

var proxyServer = httpProxy.createServer(options).listen(8080);

console.log("Listening on port 8080 and forwarding all requests to 0.0.0.0:3000");