Once the simple cron job is working, the main goal was to access environment variables in the command. For the example a simple "hello $world" is displayed but you ...
After a while, when you run docker ps, you should see the container specified from the cron job running, look for the container with the image name demo-service.
"It is certainly a tool that every system administrator should be aware of and use to automate mundane routine tasks such as backups and taking applications offline." It's common to need an action ...