2023
https://dev.to/mandraketech/systemd-crond-and-docker-container-1mob
https://blog.mandraketech.in/systemd-crond-and-docker-container
    https://github.com/navneetkarnani/docker-crond
    https://github.com/navneetkarnani/docker-crond/blob/main/docker-context/Dockerfile
2019
https://habr.com/ru/companies/redhatrussia/articles/468931/