Gigalixir "elixir release" not generating correct URLs

Questions & Help Questions
4

I’m not sure why the docs say to set that to nil. I looked at an old app i deployed to gigalixir and this is what I had

config :pipsqueak, PipsqueakWeb.Endpoint,
  server: true,
  # Needed for Phoenix 1.2 and 1.4. Doesn't hurt for 1.3.
  http: [port: {:system, "PORT"}],
  url: [host: System.get_env("APP_NAME") <> ".gigalixirapp.com", port: 443]