Add monthly offsite restore tests and automatic cleanup

systemd/app-restore-test-cleanup.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=Clean interrupted app-backup restore tests after boot
+After=local-fs.target docker.service
+Wants=docker.service
+
+[Service]
+Type=oneshot
+ExecStart=/bin/bash /usr/local/sbin/app-restore-test.sh --cleanup
+SELinuxContext=system_u:system_r:unconfined_service_t:s0
+TimeoutStartSec=5min
+UMask=0077
+Restart=on-failure
+RestartSec=15min
+
+[Install]
+WantedBy=multi-user.target