So you are running Smokeping in a container provided by Linuxserver.io. And you want its DNS probe to do DNS over TLS.
SOLUTION
Expose a new directory to the Smokeping container and mount it at /root inside the container:
-v /path/to/dir:/root
Inside this directory create a single file named .digrc with +tls as the contents:
echo '+tls' > /path/to/dir/.digrc
From now on, the /usr/bin/dig binary inside the Smokeping container will always implicitly pass the +tls flag every time it runs.
Quadlet file for systemd and podman
[Unit] Description=smokeping [Container] Image=lscr.io/linuxserver/smokeping:latest ContainerName=smokeping HostName=%H Environment=TZ=Etc/UTC Volume=%h/containers/smokeping/config:/config Volume=%h/containers/smokeping/data:/data ## My directory of choice for the .digrc file ## is ~/containers/smokeping/roothome Volume=%h/containers/smokeping/roothome:/root PublishPort=3380:80/tcp AddCapability=NET_RAW AutoUpdate=registry Pull=newer [Service] Restart=always [Install] WantedBy=default.target
