Add crontab

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