diff --git a/Dockerfile b/Dockerfile
index 8e4a9ea..4c27a86 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -106,6 +106,7 @@ COPY run.sh /
 COPY autoreload.sh /
 COPY sup.sh /
 RUN chmod +x /run.sh /autoreload.sh /sup.sh
+USER squid
 HEALTHCHECK CMD squidclient mgr:info | grep "HTTP/1.1 200 OK" || exit 1
 EXPOSE 3128
 ENTRYPOINT ["dumb-init"]