       datatype: :binary,
       doc: "Secret key used for securing session cookies",
       hidden: false,
+      env_var: "SECRET_KEY_BASE",
       to: "gatekeeper.Elixir.GatekeeperWeb.Endpoint.secret_key_base"
     ],
     "gatekeeper.Elixir.GatekeeperWeb.Endpoint.http.port": [

    ],
    "gatekeeper.doorlock.type": [
      commented: false,
      datatype: :atom,
      default: ElixirALE.GPIO,
      doc: "Module name representing the driver for the Door Lock",
      hidden: true,

    "ueberauth.Elixir.Ueberauth.providers.slack": fn conf ->
      [{_, team_id}] = Conform.Conf.get(conf, "ueberauth.Elixir.Ueberauth.providers.slack")
      {Ueberauth.Strategy.Slack, [team: team_id]}
    end,
    "gatekeeper.doorlock.type": fn conf ->
      [{_, type}] = Conform.Conf.get(conf, "gatekeeper.doorlock.type")
      case type do
        "gpio" -> ElixirALE.GPIO
        "dummy" -> Gatekeeper.GPIODummy
      end
    end,
    "gatekeeper.doorbell.type": fn conf ->
      [{_, type}] = Conform.Conf.get(conf, "gatekeeper.doorbell.type")
      case type do
        "gpio" -> ElixirALE.GPIO
        "dummy" -> Gatekeeper.GPIODummy
      end
    end
  ],
  validators: []
