* watchdog: use dig instead of check_dns
check_dns is slower and uses more system resources,
dig wrapped in a script is a more performant approach and uses
fewer system resources
* added debug mode + compose image bump
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Co-authored-by: maxi322 <maxi322@users.noreply.github.com>
Co-authored-by: DerLinkman <niklas.meyer@servercow.de>
