version: '3'

services:
  postgres:
    image: postgres:10.1
    environment:
      - POSTGRES_USER=user
      - POSTGRES_PASSWORD=password
    volumes:
      - data:/var/lib/postgresql/data
      - ./init.sql:/docker-entrypoint-initdb.d/init.sql
    ports:
      - 5432:5432

volumes:
  data: