How to enable jicofo reservation system APIs

I’m trying to setup the reservation system rest APIs for creating the conference(room on the running jitsimeet).

my main motive is to create room on jitsi meet by rest APIs
I read about it in the doc: https://github.com/jitsi/jicofo/blob/master/doc/reservation.md

but I don’t know what this is the value for JICOFO_RESERVATION_REST_BASE_URL I should put in the sip-communicator.properties file??
i’am using the docker setup of jitsi, and everything is fine.
pleease help regarding the same.