edit 2

Author: davidsmatlak

learn-pr/azure/build-and-store-container-images/includes/4-deploy-image.md

@@ -70,3 +70,10 @@ After you verify the container instance works as expected, disable the registry
 ```azurecli
 az acr update --name $ACR_NAME --admin-enabled false
 ```
+
+You should also clear the `ACR_USERNAME` and `ACR_PASSWORD` variables to remove their values from your Bash session.
+
+```azurecli
+ACR_USERNAME=""
+ACR_PASSWORD=""
+```