diff --git a/build_with_docker.sh b/build_with_docker.sh
index 2a0fc647..713b7ca2 100755
--- a/build_with_docker.sh
+++ b/build_with_docker.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# SPDX-FileCopyrightText: Copyright 2021 Arm Limited and/or its affiliates <open-source-office@arm.com>
+# SPDX-FileCopyrightText: Copyright 2021-2026 Arm Limited and/or its affiliates <open-source-office@arm.com>
 # SPDX-License-Identifier: Apache-2.0
 
 set -x
@@ -8,5 +8,5 @@ IMAGE_NAME=acle_build
 # Build the image.
 docker build -t $IMAGE_NAME tools/docker
 # Run the image, mounting the current folder into the /src folder of
-# the docker image.
-docker run --rm --mount type=bind,source="$(pwd)",target=/src $IMAGE_NAME
+# the docker image. Run as the host user so that the output files are owned by them.
+docker run --rm -u $(id -u):$(id -g) --mount type=bind,source="$(pwd)",target=/src $IMAGE_NAME