ci: speed up script tag e2e tests (#1032)

* show package bundle progress

* Ability to run "quick builds" for faster feedback on status checks (e2e)

* ci: speed up PR checks

* specify quick build value

platform/viewer/.webpack/webpack.commonjs.js

@@ -1,8 +1,9 @@
+// ~~ WebPack
 const webpack = require('webpack');
 const path = require('path');
 const merge = require('webpack-merge');
 const webpackCommon = require('./../../../.webpack/webpack.commonjs.js');
-//
+// ~~ Plugins
 const { CleanWebpackPlugin } = require('clean-webpack-plugin');
 const fontsToJavaScriptRule = require('./rules/fontsToJavaScript.js');
 const HtmlWebpackPlugin = require('html-webpack-plugin');
@@ -12,31 +13,14 @@ const DIST_DIR = path.join(__dirname, '../dist');
 const PUBLIC_DIR = path.join(__dirname, '../public');
 // ~~ Env Vars
 const HTML_TEMPLATE = process.env.HTML_TEMPLATE || 'script-tag.html';
-const PUBLIC_URL = process.env.PUBLIC_URL || '/';
 
 module.exports = (env, argv) => {
   const commonConfig = webpackCommon(env, argv, { SRC_DIR, DIST_DIR });
 
-  return merge(commonConfig, {
+  const mergedConfig = merge(commonConfig, {
     entry: {
       app: `${SRC_DIR}/index-umd.js`,
     },
-    devtool: 'source-map',
-    stats: {
-      colors: true,
-      hash: true,
-      timings: true,
-      assets: true,
-      chunks: false,
-      chunkModules: false,
-      modules: false,
-      children: false,
-      warnings: true,
-    },
-    optimization: {
-      minimize: true,
-      sideEffects: true,
-    },
     output: {
       path: DIST_DIR,
       library: 'OHIFViewer',
@@ -50,14 +34,17 @@ module.exports = (env, argv) => {
       // Clean output.path
       new CleanWebpackPlugin(),
       // Generate "index.html" w/ correct includes/imports
+      // NOTE: We use this for E2E Tests
       new HtmlWebpackPlugin({
         inject: false,
         template: `${PUBLIC_DIR}/html-templates/${HTML_TEMPLATE}`,
         filename: 'index.html',
       }),
       new webpack.optimize.LimitChunkCountPlugin({
-           maxChunks: 1
-       })
+        maxChunks: 1,
+      }),
     ],
   });
+
+  return mergedConfig;
 };