Docker Compose simples para subir Elasticsearch e Kibana

docker-compose.yml

---
version: "2"
services:
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:6.4.2
    container_name: sales_sync_elasticsearch
    ports:
      - "9200:9200"
    environment:
      discovery.type: "single-node"
      ES_JAVA_OPTS: "-Xms2g -Xmx2g"

  kibana:
    image: docker.elastic.co/kibana/kibana:6.4.2
    container_name: sales_sync_kibana
    ports:
      - "5601:5601"
    environment:
      SERVER_NAME: sales-sync
      ELASTICSEARCH_URL: http://elasticsearch:9200