Crontab entry twice?

[FalconX14]

Why is there an enviroment entry in Docker for CRONTAB_ENTRY & RSYNC_CRONTAB?
Why are both are necessary? Whats the difference?

And how can I set the timezone for Cron?

[mstroppel]

While CRONTAB_ENTRY will be put just as is into the crontab,
RSYNC_CRONTAB is only the "scheduling part" and must not contain the executable.