Add post deploy task

app.json

@@ -5,5 +5,10 @@
   "success_url": "/",
   "dokku": {
     "plugins": []
+  },
+  "scripts": {
+    "dokku": {
+      "postdeploy": "gitea migrate && gitea admin create-user --name autonomic --password autonomic --email foobar@autonomic.zone"
+    }
   }
 }