diff --git a/meta/classes/image-container-extension.bbclass b/meta/classes/image-container-extension.bbclass
index cdec463..f4e8d41 100644
--- a/meta/classes/image-container-extension.bbclass
+++ b/meta/classes/image-container-extension.bbclass
@@ -29,9 +29,8 @@ containerize_rootfs() {
         "${oci_img_dir}_unpacked"
 
     # add root filesystem as the flesh of the skeleton
-    sudo cp -a "${rootfs}"/* "${oci_img_dir}_unpacked/rootfs/"
-    # clean-up temporary files
-    sudo find "${oci_img_dir}_unpacked/rootfs/tmp" -mindepth 1 -delete
+    sudo cp -axT "${rootfs}" "${oci_img_dir}_unpacked/rootfs/"
+    
 
     # pack container image
     bbdebug 1 "pack container image"