Docker Compose YAML for creating Apache Kafka cluster w/ Confluent Platform Docker containers.

docker-compose-kafka-cluster.yaml

version: "3"

services:
  zookeeper:
    image: confluentinc/cp-zookeeper:5.4.0
    hostname: zookeeper
    container_name: zookeeper
    ports:
      - "32181:32181"
    environment:
      ZOOKEEPER_CLIENT_PORT: 32181
      ZOOKEEPER_TICK_TIME: 2000

  broker:
    image: confluentinc/cp-kafka:5.4.0
    hostname: broker
    container_name: broker
    depends_on:
      - zookeeper
    ports:
      - "29092:29092"
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: "zookeeper:32181"
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker:9092,PLAINTEXT_HOST://localhost:29092
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1

  cli:
    image: confluentinc/cp-kafka:5.4.0
    hostname: cli
    container_name: cli
    depends_on:
      - broker
    entrypoint: /bin/sh
    tty: true

If you want to connect brokers from local machine, use tcp://localhost:29092.
If from cli container, use tcp://broker:9092.