diff --git a/src/Dockerfile b/src/Dockerfile
index 8529a19..a72d018 100644
--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -1,3 +1,5 @@
+# syntax=docker/dockerfile:1
+# check=skip=SecretsUsedInArgOrEnv
 FROM ubuntu:24.04
 
 ARG FTP_USER=proftpd_user