Shifter does not currently fully support wp-cron.
Support Status
Not Supported: Shifter does not fully support wp-cron.
Reason
When Shifter generates a static site, the container running WordPress is stopped. As a result, server-dependent features such as wp-cron are not available.
Future Plans
We are considering introducing a scheduling feature, but it is not currently included in our roadmap.
Request for Feedback
If you think a scheduling feature would be useful, please let us know. Your feedback will help guide our future development.