diff --git a/user.list b/user.list
index e53db76..3844a70 100644
--- a/user.list
+++ b/user.list
@@ -9,3 +9,4 @@ id    user               group             notes
 1001  mirror             mirror            
 1002  certbot            certbot           
 1003  backup             backup
+1004  docker             docker            docker registry