diff --git a/samples/html-css-js/compose.yaml b/samples/html-css-js/compose.yaml
index 4fd7999c..50875e77 100644
--- a/samples/html-css-js/compose.yaml
+++ b/samples/html-css-js/compose.yaml
@@ -19,3 +19,5 @@ services:
         - curl
         - -f
         - http://localhost:8080/
+    x-defang-static-files:
+      folder: /usr/share/nginx/html