Comment puis-je exécuter un script Ruby dans un cronjob quotidien ?

[supermathie (Michael Brown)]

From an application-development point of view:

@merefield

The Discourse (and Rails) way of doing this would be to create a plugin and run it as a scheduled (sidekiq) Job.

From a systems point of view:

Easiest thing to do is run it on the host.

Launcher run app gives error when trying backup

You have a scheduler outside of the container available, right? You can schedule it there, e.g.: # put in host crontab # run backup once every 4 hours on the hour 0 */4 * * * docker exec app discourse backup --sql-only