firefly_iii con job not supported

Currently the firefly iii doesnt have the automation working since it need cron support. you can read more on it here: https://docs.firefly-iii.org/how-to/firefly-iii/advanced/cron/#cron-jobs-in-docker

I will push a fix soon on this subject but just want to confirm something. How do you create secret, more specifically the setup will need a 32 character length and I'm unsure if it need to be in the vault or just in dockerfile?

Live I will take inspiration of this line as a start https://gitlab.com/salco/HomelabOS/-/blob/dev/roles/firefly_iii/templates/docker-compose.firefly_iii.yml.j2#L25