diff --git a/docker/xaal-debian/test.sh b/docker/xaal-debian/test.sh
index 34c553fc1139a73c5ed3f6fd386b5ce2e8b065a1..1e09253e3524713761d8447b25d272d40b347bf1 100755
--- a/docker/xaal-debian/test.sh
+++ b/docker/xaal-debian/test.sh
@@ -6,3 +6,4 @@ NAME=xaal-debian
 docker buildx build -t ${NAME}:${VER} .
 docker run -it --rm ${NAME}:${VER}
 docker rmi ${NAME}:${VER}
+docker builder prune