diff --git a/nodered/Dockerfile b/nodered/Dockerfile
index 6ecd479..054a470 100644
--- a/nodered/Dockerfile
+++ b/nodered/Dockerfile
@@ -60,7 +60,9 @@ RUN addgroup node-red sudo
 
 RUN cat /dev/null > /etc/sudoers \
 	&& echo -e "Set disable_coredump false\n" > /etc/sudo.conf \
-	&& echo -e "node-red ALL=(ALL) NOPASSWD: ALL\n%sudo ALL=(ALL) NOPASSWD: ALL\n" > /etc/sudoers
+	&& touch /etc/sudoers \
+	&& echo -e "\nnode-red ALL=(ALL) NOPASSWD: ALL\n%sudo ALL=(ALL) NOPASSWD: ALL\n" > /etc/sudoers \
+	&& chmod 0440 /etc/sudoers
  
 RUN apt-get clean autoclean && \
     apt-get autoremove --yes && \