version: '2'

services:
  zookeeper:
    image: confluentinc/cp-zookeeper:5.2.0
    hostname: zookeeper
    container_name: zookeeper
    ports:
      - '2181:2181'
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    extra_hosts:
      - "moby:127.0.0.1"

  kafka:
    image: confluentinc/cp-kafka:5.2.0
    hostname: kafka
    container_name: kafka
    ports:
      - '9092:9092'
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: "false"
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1

    extra_hosts:
      - "moby:127.0.0.1"

  schema-registry:
    image: confluentinc/cp-schema-registry:5.2.0
    hostname: schema-registry
    container_name: schema-registry
    depends_on:
      - zookeeper
      - kafka
    ports:
      - '9999:8081'
    environment:
      SCHEMA_REGISTRY_HOST_NAME: schema-registry
      SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: zookeeper:2181
    extra_hosts:
      - "moby:127.0.0.1"

  kafka-create-topics:
    image: confluentinc/cp-kafka:5.2.0
    depends_on:
      - kafka
    hostname: kafka-create-topics
    command: "bash -c 'echo Waiting for Kafka to be ready... && \
                       cub kafka-ready -b kafka:9092 1 20 && \
                       kafka-topics --create --topic test --if-not-exists --zookeeper zookeeper:2181 --partitions 1 --replication-factor 1 && \
                       sleep infinity'"
    environment:
      KAFKA_BROKER_ID: ignored
      KAFKA_ZOOKEEPER_CONNECT: ignored
    extra_hosts:
      - "moby:127.0.0.1"