CRON_SECRET=
PRIVATE_VAPID=
PUBLIC_VAPID=
CONTACT_EMAIL=
DATABASE_URL=
An hourly cron job can be configured to trigger /api/push-notifications with
the header x-cron-secret (matching the environment variable CRON_SECRET).
This will notify any clients with pending reviews.
You can schedule the cron job by add the following, using crontab -e.
0 * * * * curl --silent --show-error --fail --max-time 20 -H "x-cron-secret: SECRET" "https://HOST/api/push-notifications" > /dev/null 2>&1