Use tmpfs for zookeeper datalog

Fixes "ERROR Error while creating ephemeral at /brokers/ids/1002, node already exist"
See https://github.com/wurstmeister/kafka-docker/issues/389

docker-compose.yml

@@ -17,6 +17,8 @@ services:
       - ALLOW_ANONYMOUS_LOGIN=yes
     networks:
       - kafka-cluster
+    tmpfs:
+      - "/datalog"
       
   kafka1:
     image: bitnami/kafka:3.1.0