Implemented systemctl error checker

roles/native-journalctl-health-check/files/journalctl-health-check.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+echo "Checking journalctl for error messages..."
+journalctl_errors="$(journalctl --since '1 day ago' --no-pager | grep -i 'error')"
+if [ ! -z "$journalctl_errors" ]
+then 
+   echo "Some errors where found: $journalctl_errors"
+   exit 1
+fi
+echo "All docker containers are healthy."
+exit 0

roles/native-journalctl-health-check/files/journalctl-health-check.timer

@@ -0,0 +1,8 @@
+[Unit]
+Description=starts journalctl-health-check.service
+
+[Timer]
+OnCalendar=00:00
+
+[Install]
+WantedBy=timers.target