Hi Sven
Nice tool - thank you.

I ran python3 kafka_docker_composer.py -b 3 -z 3 --racks 3 and it generated 3 errors on starting, each:
services.kafka-?.environment.KAFKA_CONFLUENT_CLUSTER_LINK_ENABLE contains true, which is an invalid type, it should be a string, number, or a null

I changed each instance to KAFKA_CONFLUENT_CLUSTER_LINK_ENABLE="true" and this error went away, but I then get: Error opening zip file or JAR manifest missing : /tmp/jmx_prometheus_javaagent-0.20.0.jar zookeeper-2 | agent library failed to init: instrument