How to execute rake command as cronjob

[HigH-HawK]

Hi,

we are using the latest Redmine Docker Container from (https://hub.docker.com/_/redmine) with a docker-compose.yml file and want to setup issue creation via IMAP email retrieval.

When I access the redmine container via

docker exec -it redmine /bin/bash

and execute the rake command

bundle exec rake redmine:email:receive_imap RAILS_ENV="production" host=imap.gmail.com port=993 username=username password=password ssl=true folder="IMAPFolder" unknown_user=accept no_permission_check=1 project="myRedmineProjectIdentifier" tracker=Protocol

It processes the email and creates an issue in Redmine. Now I want to setup a Cronjob, which will be run every 5 minutes to check the IMAP Mailbox and create an issue in Redmine. I am however stuck, as I don't really know how I could setup the Cronjob.

The container itself has no Cron installed and many people were saying that Cronjobs should be run outside of the container and that is where I am stuck, since I don't really know how to realise this.

I found this guide, which kind of explains how to setup something like a Cronjob but am unsure if this works with our container.

Please could someone help me with this?

[HigH-HawK]

Sorted it with the first post at #64