Textfile collector allows to export metrics gathered by other sources (bash scripts triggered by cron etc) from a specific directory.
With this metrics for podman, dhcp and other things can be made available without installing yet another exporter (like podman exporter).

Proposal:

set service monitoring prometheus node-exporter collector text-file

would set node-exporter to monitor /run/node_exporter/collector where scripts could place their metrics for export