The exporter uses Podman API. The Podman socket should be provided.
Have a look at: https://docs.podman.io/en/latest/markdown/podman-system-service.1.html
cargo build --release
./prometheus_podman_exporter -h 0.0.0.0 -p9807 --podman unix://${XDG_RUNTIME_DIR}/podman/podman.sockpodman run --rm -it \
-v ${XDG_RUNTIME_DIR}/run/podman:/run/podman:z --security-opt label=disable \
-p9807:9807 \
ghcr.io/vpikulik/prometheus_podman_exporter:latest \
./prometheus_podman_exporter -h 0.0.0.0 -p9807 --podman unix:///run/podman/podman.sock