diff --git a/roles/alpine/meta/argument_specs.yml b/roles/alpine/meta/argument_specs.yml
index d945130..fcf3613 100644
--- a/roles/alpine/meta/argument_specs.yml
+++ b/roles/alpine/meta/argument_specs.yml
@@ -36,4 +36,6 @@ argument_specs:
       docker_entrypoint:
         description: "Passed to container role"
         required: false
-
+      dockerfile:
+        description: "Passed to container role"
+        required: false