🏗 Updates Heroku build files (#723)

Procfile

@@ -1,4 +1 @@
-# Heroku config - Specifies the commands to execute when the app starts
-# See docs for more info: https://devcenter.heroku.com/articles/procfile
-
-web: node server.js
+web: npm run build-and-start

app.json

@@ -1,5 +1,6 @@
 {
   "name": "Dashy",
+  "website": "https://dashy.to/",
   "description": "A Dashboard for your Homelab 🚀",
   "repository": "https://github.com/lissy93/dashy",
   "logo": "https://raw.githubusercontent.com/Lissy93/dashy/master/docs/assets/logo.png",
@@ -13,4 +14,4 @@
     "lissy93"
   ],
   "stack": "heroku-20"
-}
+}