diff --git a/aurral/Dockerfile b/aurral/Dockerfile
index 3826991edc..4f3e451676 100644
--- a/aurral/Dockerfile
+++ b/aurral/Dockerfile
@@ -18,3 +18,8 @@ LABEL \
 COPY rootfs /
 
 RUN chmod a+x /etc/services.d/aurral/run
+
+# Override the upstream docker-entrypoint.sh which tries to chown host-mounted
+# paths and fails with "Operation not permitted" in the HA supervisor environment.
+# s6-overlay's /init takes over process supervision instead.
+ENTRYPOINT ["/init"]