@@ -57,6 +57,9 @@ DOCUMENTATION = '''

                 - The path of a Service Account JSON file if serviceaccount is selected as type.

             required: True

             type: path

+            env:

+                - name: GCE_CREDENTIALS_FILE_PATH

+                  version_added: "2.8"

         service_account_email:

             description:

                 - An optional service account email address if machineaccount is selected