containerpilot: Member has conflicting node ID

I have several services running with ContainerPilot, for one of them, I have the following error when it runs, which prevents the local consul agent to register to the consul server.

* Failed to join 172.18.0.2: Member '4b7d8eea9a88' has conflicting node ID '7ba08ece-d74e-4b39-b5fb-c9b18a396864' with this agent's ID

Seems this can be solved by fixing the node id when running the consul agent: https://github.com/hashicorp/consul/issues/2877

How would you recommend to set the node-id in the consul subprocess ?

    {
      "command": ["/usr/local/bin/consul", "agent",
                  "-node-id", "something like $(cat /proc/sys/kernel/random/uuid)", ?
                  "-data-dir=/data",
                  "-config-dir=/config",
                  "-rejoin",
                  "-retry-join", "{{ if .CONSUL }}{{ .CONSUL }}{{ else }}consul{{ end }}",
                  "-retry-max", "10",
                  "-retry-interval", "10s"],
      "restarts": "unlimited"
    }

Thanks a lot.