docker: automatiser messenger

[jgauthi]

Todo (sous réserve de faisabilité):

• Automatiser la commande make messenger ou symfony messenger:consume async pour ne pas avoir à la lancer manuellement.

[jgauthi]

https://symfony.com/doc/current/messenger.html#consuming-messages-running-the-worker

Use a Process Manager like Supervisor or systemd to keep your worker(s) running

• You'll want one or more "workers" running at all times. To do that, use a process control system like Supervisor or systemd.

Supervisor is a great tool to guarantee that your worker process(es) is always running (even if it closes due to failure, hitting a message limit or thanks to messenger:stop-workers).

✔️ Tester Supervisor ? Yes