Ok, now the docker-compose.yml is:
version: '2'
services:
zookeeper:
image: 'bitnami/zookeeper:3'
ports:
- '2181:2181'
volumes:
- 'zookeeper_data:/bitnami'
environment:
- ALLOW_ANONYMOUS_LOGIN=yes
kafka:
image: 'bitnami/kafka:2'
ports:
- '9092:9092'
volumes:
- 'kafka_data:/bitnami'
environment:
- KAFKA_BROKER_ID=1
- KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP=PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
- KAFKA_CFG_LISTENERS=PLAINTEXT://:9092,PLAINTEXT_HOST://:9092
- KAFKA_CFG_ADVERTISED_LISTENERS=PLAINTEXT://kafka:9092,PLAINTEXT_HOST://localhost:9092
- KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper:2181
- KAFKA_SERVER_PORT=9092
- ALLOW_PLAINTEXT_LISTENER=yes
depends_on:
- zookeeper
volumes:
zookeeper_data:
driver: local
kafka_data:
driver: local
And obviously I changed the port used in the app to 9092.
But still, I have the same problem as before.