Help with Securing Kibana

[Bill_McConaghy]

You might find this reply helpful re: env variables and kibana.yml:

How to set custom env variable in kibana.yml

I need to assign server.host and elasticsearch.url our custom env varible this is my env variable MY_IP. I need to assign this variable has a serverhost and elasticsearch.url , so i tried below way kibana.yml user_dir: &docker_ip ${MY_IP} server.host: "%{*docker_ip}" elasticsearch.url: "http://%{*docker_ip}:9200" its not working for me, Suggest me how to set our custom env varible to kibana configuration.