Add ensure_all_started :public_key

Author: dominicletz

lib/package/macos.ex

@@ -357,6 +357,9 @@ defmodule Desktop.Deployment.Package.MacOS do
   @friendly_attribute {2, 5, 4, 3}
   def locate_uid(pem_filename) do
     cert = File.read!(pem_filename)
+    # Test for missing public_key application
+    # ref https://elixirforum.com/t/nerves-key-hub-mix-tasks-fail-because-of-missing-pubkey-pem-module/62821/2
+    {:ok, _started} = Application.ensure_all_started(:public_key)
     cert_der = List.keyfind!(:public_key.pem_decode(cert), :Certificate, 0)
 
     :public_key.der_decode(:Certificate, elem(cert_der, 1))