I have tried to start with next config
version: '2'
services:
kibana:
image: docker.elastic.co/kibana/kibana:6.6.1
environment:
SERVER_NAME: kibana.example.org
ELASTICSEARCH_HOSTS: http://elasticsearch.example.org
But in log messages
log [13:30:22.733] [warning][admin][elasticsearch] Unable to revive connection: http://elasticsearch:9200/
With 6.6.0 version, ENV Works fine.