docker-compose.yaml

version: '3.8'

services:
  app:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - "3000:3000"
    environment:
      # Connection strings for the Node.js application
      MONGO_URI: mongodb://mongo:27017/mydatabase
      REDIS_HOST: redis
      REDIS_PORT: 6379
    depends_on:
      - mongo
      - redis
    volumes:
      # Mounts the local directory to the container to enable live code changes
      - .:/usr/src/app
      - /usr/src/app/node_modules
    networks:
      - app-network

  mongo:
    image: mongo:latest
    ports:
      - "27017:27017"
    volumes:
      # Persists data to a named volume
      - mongo-data:/data/db
    networks:
      - app-network

  redis:
    image: redis:latest
    ports:
      - "6379:6379"
    networks:
      - app-network

volumes:
  # Defines the volume for MongoDB data persistence
  mongo-data:

networks:
  # Defines a custom network for all services to communicate
  app-network:
    driver: bridge