Container 中启动定时任务 #

cron-docker // 项目根路径  
├── Dockerfile // Dockerfile文件  
├── sources.list // 源文件  
└── crontabfile // 定时任务文件  

FROM ubuntu:latest  
MAINTAINER taroballs  
  
COPY sources.list /etc/apt/sources.list  
RUN apt-get update && apt-get -y install cron  
  
# Add crontab file in the cron directory  
ADD crontabfile /etc/cron.d/hello-cron  
  
# Give execution rights on the cron job  
RUN chmod 0644 /etc/cron.d/hello-cron  
  
# Create the log file to be able to run tail  
RUN touch /var/log/cron.log  
  
RUN crontab /etc/cron.d/hello-cron  
  
# Run the command on container startup  
CMD cron && tail -f /var/log/cron.log  

* * * * * echo "Hell0 w0r1d for yOu" >> /var/log/cron.log  

docker build -t cron-docker .  

docker run -itd cron-docker  

docker exec -it a53df89ec72d /bin/bash  

crontab -l  

cat /usr/log/cron.log