Prometheus pack is misconfigured

[AAverin]

Prometheus pack has hardcoded paths to local/config that don't exist on the configured volume. Configured volume is not used correctly in the template.

[AAverin]

Took some time to figure this out. The way local/config should be better explained and documented.
Missing part is this pre-task that will make sure prometheus uid/gid will have access to the mounted volume.

# Prometheus running in its own uid:gid doesn't have access to mounted volume by default
    # Running pre-task to change ownership
    # https://github.com/hashicorp/nomad/issues/8892
    # https://github.com/prometheus/prometheus/issues/5976
    task "prep-disk" {
      driver = "docker"
      volume_mount {
        volume      = "prometheus"
        destination = "/prometheus"
        read_only   = false
      }
      config {
        image        = "busybox:latest"
        command      = "sh"
        args         = ["-c", "chown -R 65534:65534 /prometheus"]
      }
      resources {
        cpu    = 200
        memory = 128
      }

      lifecycle {
        hook    = "prestart"
        sidecar = false
      }
    }