diff --git a/clustertool/pkg/initfiles/initfiles.go b/clustertool/pkg/initfiles/initfiles.go
index f2a04da..f58d57e 100644
--- a/clustertool/pkg/initfiles/initfiles.go
+++ b/clustertool/pkg/initfiles/initfiles.go
@@ -341,7 +341,7 @@ func setDocker() {
 		// Prepare the content to append
 		configContent := fmt.Sprintf(`
     # Add Dockerhub Login
-    config
+    config:
       registry-1.docker.io:
         auth:
           username: "%s"