Add a "compact" script to the buildpack to reduce final image size. Realized that webpack was always required even though it's a devDep; made it so that it doesn't have to be loaded.

lib/roles/app.js

@@ -17,7 +17,6 @@ var dbapi = require('../db/api')
 var datautil = require('../util/datautil')
 
 var auth = require('./app/middleware/auth')
-var webpack = require('./app/middleware/webpack')
 var deviceIconMiddleware = require('./app/middleware/device-icons')
 var browserIconMiddleware = require('./app/middleware/browser-icons')
 
@@ -43,8 +42,9 @@ module.exports = function(options) {
     app.use('/static/app/build', serveStatic(pathutil.resource('build'), {
       maxAge: '10d'
     }))
-  } else {
-    app.use('/static/app/build', webpack({
+  }
+  else {
+    app.use('/static/app/build', require('./app/middleware/webpack')({
       debug: true
       , devtool: 'eval'
       , stats: {