Docker: Cronjob is not working

Question

I am trying to run cron job on Docker container. I have a running container (Fedora 20). I have also installed cron packages in container and explicitly run the cron daemon

Answer 1

You can do:

ENTRYPOINT cron -f

although remember that you can only have one ENTRYPOINT.

From the docs:

There can only be one ENTRYPOINT in a Dockerfile. If you have more than one ENTRYPOINT, then only the last one in the Dockerfile will have an effect.

An ENTRYPOINT helps you to configure a container that you can run as an executable. That is, when you specify an ENTRYPOINT, then the whole container runs as if it was just that executable.