How to run a cron job inside a docker container?

Question

I am trying to run a cronjob inside a docker container that invokes a shell script.

Yesterday I have been searching all over the web and stack overflow, but I could

Answer 1

So, my problem was the same. The fix was to change the command section in the docker-compose.yml.

From

command: crontab /etc/crontab && tail -f /etc/crontab

To

command: crontab /etc/crontab

command: tail -f /etc/crontab

The problem was the '&&' between the commands. After deleting this, it was all fine.