Prod webpack outputs to minjs dir

services/web/webpack.config.prod.js

@@ -1,3 +1,4 @@
+const path = require('path')
 const webpack = require('webpack')
 const merge = require('webpack-merge')
 
@@ -7,6 +8,11 @@ module.exports = merge(base, {
   // Enable a full source map.
   devtool: 'source-map',
 
+  output: {
+    // Override output path to minjs dir
+    path: path.join(__dirname, '/public/minjs/es'),
+  },
+
   plugins: [
     // Use UglifyJS to minimise output
     new webpack.optimize.UglifyJsPlugin({