added docker cli

Dockerfile

@@ -1,7 +1,9 @@
-FROM cron
-MAINTAINER gyurix
+FROM alpine
+RUN apk --update add curl jq docker-cli
 RUN mkdir -p /opt/cron
 COPY  entrypoint.sh /entrypoint.sh
 COPY  cron-re-read.sh /cron-re-read.sh
 COPY service /usr/local/bin/
+RUN chmod a+x /usr/local/bin/service 
+RUN chmod a+x /*.sh 
 ENTRYPOINT ["/entrypoint.sh"]