-// healthcheck in case / does not serve up any file yet
-router.get('/', function (req, res) { res.sendFile(path.join(__dirname, '/app/welcome.html')); });
+// welcome screen in case / does not serve up any file yet
+var appUrl = process.env.HOSTNAME ? 'https://' + process.env.HOSTNAME : 'http://localhost:3000';
+router.get('/', function (req, res) { res.status(200).send(ejs.render(fs.readFileSync(path.join(__dirname, '/app/welcome.html'), 'utf8'), { appUrl: appUrl })); });