limit heap size of elastic and add some data and account

docker/composers/commetoo-cloud/elk.yml

@@ -5,6 +5,8 @@ services:
     ports:
     ports:
       - "5601:5601"
       - "5601:5601"
       - "9200:9200"
       - "9200:9200"
+    environment:
+      ES_JAVA_OPTS: "-Xms512m -Xmx512m"
     volumes:
     volumes:
       - "/ext/elasticsearch:/var/lib/elasticsearch"
       - "/ext/elasticsearch:/var/lib/elasticsearch"
     networks:
     networks: