services:
  db:
    image: postgres:18-alpine
    shm_size: 256mb
    environment:
      POSTGRES_PASSWORD: postgres
    ports:
      - "5440:5432"
    volumes:
      - ../example/init.sql:/docker-entrypoint-initdb.d/10_schema.sql:ro
      - ./bigdata.sql:/docker-entrypoint-initdb.d/15_bigdata.sql:ro
      - ../relation_sql.sql:/docker-entrypoint-initdb.d/20_relation_sql.sql:ro