No more crond

[Metabaron1]

Hi all
I updated this postfix container a few days ago as there some new interesting updates, but I was very disapointed when I noticed that the cron was not working anymore.

Of course I understand that custom certificate should not be updated, but you should not just completely remove a feature that has been there from the beginning and could be used by other users.
Especially when you just have to delete (or move from /etc/periodic) the cron config to properly disable it so that the certificate is not updated anymore.
So could you please put the cron back in entrypoint.sh and instead remove the certificate cron config, something like:

  if [[ -f ${TLS_KEY_FILE} && -f ${TLS_CERT_FILE}  ]]; then
    rm -f /etc/periodic/hourly/renew-postfix-tls
    crond && python3 generate_config.py --postfix && setup_dnsbl_reply_map && postfix start-fg
  else

Thanks and happy new year