├── Dockerfile
├── README.md
└── crontab


/Dockerfile:
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 1 | FROM ubuntu:latest
 2 | MAINTAINER docker@ekito.fr
 3 | 
 4 | # Add crontab file in the cron directory
 5 | ADD crontab /etc/cron.d/hello-cron
 6 | 
 7 | # Give execution rights on the cron job
 8 | RUN chmod 0644 /etc/cron.d/hello-cron
 9 | 
10 | # Create the log file to be able to run tail
11 | RUN touch /var/log/cron.log
12 | 
13 | #Install Cron
14 | RUN apt-get update
15 | RUN apt-get -y install cron
16 | 
17 | 
18 | # Run the command on container startup
19 | CMD cron && tail -f /var/log/cron.log
20 | 


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/README.md:
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1 | # docker-cron
2 | An example of running cron job in a docker container
3 | 


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/crontab:
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1 | * * * * * root echo "Hello world" >> /var/log/cron.log 2>&1
2 | # Don't remove the empty line at the end of this file. It is required to run the cron job
3 | 


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