Add support for Laravel Task Scheduling (cron)

[Patrick Schaub]

Please provide a way to support Laravel Task Scheduling (cron)
See: https://laravel.com/docs/5.6/scheduling

We need a way to add a cron to the docker container.

[Julien Guyomard]

Yes, it's a good idea!
I don't have time for this right now, can you try to make a Pull Request? Thx