feat(*): add Express server for hosting static file builds

BDS-693

Author: EvanLovely

package.json

@@ -55,13 +55,15 @@
     "test:js:watch": "jest --watch",
     "test:php": "cd packages/core-php && composer run test",
     "test": "npm-run-all --parallel test:*",
+    "serve": "node server.js",
     "watch:icons": "lerna exec --scope @bolt/components-icons -- yarn run watch"
   },
   "dependencies": {
     "sassdoc": "^2.5.0"
   },
   "devDependencies": {
     "editorconfig-checker": "^1.3.3",
+    "express": "^4.16.3",
     "husky": "^0.14.3",
     "jest": "^23.5.0",
     "lerna": "^3.2.1",

server.js

@@ -0,0 +1,11 @@
+const express = require('express');
+const { join } = require('path');
+const app = express();
+
+const port = process.env.PORT || 3123;
+
+app.use(express.static(join(__dirname, './www')));
+
+app.listen(port, () => {
+  console.log(`Express listening on http://localhost:${port}`);
+});