fix: improve dockcheck cron job logging and reliability

- Added comprehensive logging to /var/log/dockcheck/dockcheck.log
- Created wrapper script to avoid cron variable escaping issues
- Added timestamp logging for each execution with exit codes
- Created proper log directory with correct permissions
- Removed unnecessary -n flag (config file handles DontUpdate=true)
- Added cron handlers for service management

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

roles/cron/handlers/main.yml

@@ -0,0 +1,6 @@
+---
+# Handler to restart systemd-journald service
+- name: restart rsyslog
+  systemd:
+    name: systemd-journald
+    state: restarted