disable Kibana by default, Cerebro optionally

Docker/docker-compose.yml

@@ -60,6 +60,7 @@ services:
   # Kibana : https://www.elastic.co/guide/en/kibana/6.8/index.html
   kibana:
     image: docker.elastic.co/kibana/kibana:7.11.1
+    entrypoint: ["echo", "Service Kibana disabled"]
     env_file:
       - kibana.env
     depends_on:
@@ -68,6 +69,7 @@ services:
       - 5601:5601
   cerebro:
     image: lmenezes/cerebro
+#    entrypoint: ["echo", "Service cerebro disabled"]
     ports:
       - 9001:9000
     links: