Gate registration to ALLOWED_REGISTRATION_EMAIL

app/config/runtime.exs

@@ -20,6 +20,8 @@ if System.get_env("PHX_SERVER") do
   config :firehose, FirehoseWeb.Endpoint, server: true
 end
 
+config :firehose, :allowed_registration_email, System.get_env("ALLOWED_REGISTRATION_EMAIL")
+
 if config_env() == :prod do
   database_url =
     System.get_env("DATABASE_URL") ||

app/config/test.exs

@@ -38,3 +38,5 @@ config :phoenix, :plug_init_mode, :runtime
 # Enable helpful, but potentially expensive runtime checks
 config :phoenix_live_view,
   enable_expensive_runtime_checks: true
+
+config :firehose, :allowed_registration_email, nil