set up cronjob and timer

templates/systemd/chill-cronjob@.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=Execute cron job for chill with environment %i
+
+[Service]
+User={{ as_user }}
+ExecStart=/usr/bin/docker compose --file {{ install_dir }}/%i/compose.yaml up cron
+Type=simple
+# execute maximum 30 minutes
+RuntimeMaxSec=1800