using app_env to define the api path

build/webpack.config.prod.js

@@ -1,5 +1,6 @@
 'use strict'
 
+const webpack = require('webpack')
 const merge = require('webpack-merge')
 const baseConfig = require('./webpack.config.base')
 const MiniCssExtractPlugin  = require('mini-css-extract-plugin')
@@ -38,6 +39,9 @@ module.exports = merge(baseConfig, {
   plugins: [
     new MiniCssExtractPlugin({
       filename: 'main.css'
+    }),
+    new webpack.DefinePlugin({
+      "process.env": "'dev'"
     })
   ]
 })