diff --git a/Dockerfile b/Dockerfile
index d1b3b41..ea1c2b7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,8 +5,7 @@ VOLUME /data
 
 RUN apk add --no-cache git bash openssh parallel openssh-keygen vim shadow
 RUN useradd --uid 10000 -ms /bin/bash executor
-RUN chown executor:executor /data
-RUN echo "*	*	*	*	*	/usr/local/bin/cron-command" >> /etc/crontabs/root
+ADD crontab /etc/crontabs/executor
 RUN	apk del shadow
 ADD dockerbin/* checker/* src/* /usr/local/bin/
 ADD executor-conf /etc/init.d
diff --git a/crontab b/crontab
new file mode 100644
index 0000000..e7f011c
--- /dev/null
+++ b/crontab
@@ -0,0 +1,3 @@
+# executor crontab
+*	*	*	*	*	/usr/local/bin/cron-command > /home/executor/cron.log
+0	0	*	*	*	mv /home/executor/cron.log /home/executor/cron.old