version: '3'

services:
  kafka:
    image: confluentinc/cp-kafka:${CONFLUENT_VERSION:-7.5.1}
    environment:
      - KAFKA_BROKER_ID=0
      - KAFKA_ZOOKEEPER_CONNECT=zookeeper:2181
      - KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://localhost:9092
      - KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR=1
      - KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR=1
      - KAFKA_TRANSACTION_STATE_LOG_MIN_ISR=1
      - KAFKA_NUM_PARTITIONS=3
      - CONFLUENT_SUPPORT_METRICS_ENABLE=0
    ports: ["9092:9092"]
    links: [zookeeper]

  zookeeper:
    image: confluentinc/cp-zookeeper:${CONFLUENT_VERSION:-7.5.1}
    environment:
      - ZOOKEEPER_CLIENT_PORT=2181
    ports: ["2181:2181"]