[Unit]
Description="Monitor /var/tmp/letsencrypt/ for cert names to deploy."
After=apache2.service

[Path]
# TriggerLimitIntervalSec=60 - not available until next version of systemd (250)
MakeDirectory=true
DirectoryMode=0777
DirectoryNotEmpty=/var/tmp/letsencrypt
Unit=letsencrypt-deploy.service

[Install]
WantedBy=multi-user.target