Instead of downloading the `blackbox_exporter` binary from GitHub and
copying it to the managed node, the _blackbox-exporter_ role now
installs _podman_ and configures a systemd container unit (Quadlet) to
run it in a container. This simplifies the deployment considerably, and
will make updating easier (just run the playbook with `-e
blackbox_exporter_pull_image=true`).
Dustin C. Hatch
dcf1e5adfc