docker-compose.yml

version: "3"

services:
  master:
    image: mapreduce-master
    container_name: master
    ports:
      - "1234:1234"
    volumes:
      - input_data:/app/input_data
      - output_data:/app/output_data
    networks:
      - mapreduce_net

  worker1:
    image: mapreduce-worker
    depends_on:
      - master
    volumes:
      - input_data:/app/input_data
      - output_data:/app/output_data
    networks:
      - mapreduce_net

  worker2:
    image: mapreduce-worker
    depends_on:
      - master
    volumes:
      - input_data:/app/input_data
      - output_data:/app/output_data
    networks:
      - mapreduce_net

  worker3:
    image: mapreduce-worker
    depends_on:
      - master
    volumes:
      - input_data:/app/input_data
      - output_data:/app/output_data
    networks:
      - mapreduce_net

volumes:
  input_data:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: ${PWD}/input_data
  output_data:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: ${PWD}/output_data

networks:
  mapreduce_net:
    driver: bridge