diff --git a/dogfood/Dockerfile b/dogfood/Dockerfile
index 19723853aa7ac..27f90a5752eaa 100644
--- a/dogfood/Dockerfile
+++ b/dogfood/Dockerfile
@@ -90,7 +90,7 @@ SHELL ["/bin/bash", "-c"]
 # the default mirror with teraswitch.
 RUN apt-get update && apt-get install --yes ca-certificates
 
-COPY files /
+COPY --chown=root:root files /
 
 # Install packages from apt repositories
 ARG DEBIAN_FRONTEND="noninteractive"