Refer to local registry or docker hub.

Change-Id: I5ab2d4b85c399155fe63f20378eb7100ab5cd21b
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8a4f208
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+# Copyright 2020-present Open Networking Foundation
+#
+# SPDX-License-Identifier: Apache-2.0
+
+resources/aether.registry.yaml