diff --git a/scripts/webui/webui_install_image.sh b/scripts/webui/webui_install_image.sh
index 5e5bbf6..e7012e4 100755
--- a/scripts/webui/webui_install_image.sh
+++ b/scripts/webui/webui_install_image.sh
@@ -6,6 +6,13 @@ installLibrePortalImageWebUI()
 
   isNotice "Building the LibrePortal WebUI Docker image..."
 
+  # The copy below writes into the dockerinstall-owned containers/ dir. On a
+  # fresh install the general traversal/ownership reconcile runs LATER, so at
+  # this point /docker is still 750 (untraversable by the container user) and
+  # containers/ may still be manager-owned — the copy would fail. Establish
+  # traversal (+x on /docker) and containers/ ownership FIRST.
+  fixFolderPermissions
+
   local result=$(copyFolder "$install_containers_dir/libreportal" "$containers_dir" "$sudo_user_name")
   checkSuccess "Copy the LibrePortal to the containers folder"