playdingnow/docker-cron-example
an example how to use crontab in docker
Image
0
301
playdingnow/docker-cron-example repository overview
docker-cron-example
>> docker run --rm -it playdingnow/docker-cron-example
your job is */1 * * * * echo $(date) > /dev/stdout
crond[8]: crond (busybox 1.27.2) started, log level 0
crond[8]: user:root entry:*/1 * * * * echo $(date) > /dev/stdout
crond[8]: user:root entry:*/1 * * * * echo $(date) > /dev/stdout
crond[8]: wakeup dt=26
crond[8]: file root:
crond[8]: line echo $(date) > /dev/stdout
crond[8]: job: 0 echo $(date) > /dev/stdout
crond[9]: child running /bin/sh
crond[8]: USER root pid 9 cmd echo $(date) > /dev/stdout
Mon Mar 5 07:47:00 UTC 2018
Use Environment
cronjob just put your job here, like the example below
>> docker run --rm -it -e cronjob='* * * * * echo "test" > /dev/stdout' playdingnow/docker-cron-example
your job is * * * * * echo "test" > /dev/stdout
crond[8]: crond (busybox 1.27.2) started, log level 0
crond[8]: user:root entry:* * * * * echo "test" > /dev/stdout
crond[8]: user:root entry:* * * * * echo "test" > /dev/stdout
crond[8]: wakeup dt=58
crond[8]: file root:
crond[8]: line echo "test" > /dev/stdout
crond[8]: job: 0 echo "test" > /dev/stdout
crond[9]: child running /bin/sh
crond[8]: USER root pid 9 cmd echo "test" > /dev/stdout
test
Build Your Own
See example dockerfile below
FROM playdingnow/docker-cron-example:1.0
RUN apk add --no-cache curl
ENV cronjob='10 * * * */1 sh /delete-old-indexes.sh >> /dev/stdout'
ADD delete-old-indexes.sh /
RUN chmod -x delete-old-indexes.sh
Tag summary
Content type
Image
Digest
Size
2 MB
Last updated
over 8 years ago
docker pull playdingnow/docker-cron-example