diff --git a/config_defaults.yml b/config_defaults.yml
index 9986b337..8938f3c2 100644
--- a/config_defaults.yml
+++ b/config_defaults.yml
@@ -147,5 +147,7 @@ Modulefile:
   delete: true
 Makefile:
   delete: true
+Dockerfile:
+  delete: true
 ...
 # vim: syntax=yaml