docker-compose.yml

version: '3.5'

services:
  postgres0_service:
    container_name: postgres0_service
    image: postgres
    environment:
      POSTGRES_USER: user
      POSTGRES_PASSWORD: password
      POSTGRES_DB: postgres
      PGDATA: /data/postgres
    volumes:
      - postgres0:/data/postgres
      - ./init.sql:/docker-entrypoint-initdb.d/init.sql
    ports:
      - "127.0.0.1:5430:5432"
    restart: unless-stopped

  postgres1_service:
    container_name: postgres1_service
    image: postgres
    environment:
      POSTGRES_USER: user
      POSTGRES_PASSWORD: password
      POSTGRES_DB: postgres
      PGDATA: /data/postgres
    volumes:
      - postgres1:/data/postgres
      - ./init.sql:/docker-entrypoint-initdb.d/init.sql
    ports:
      - "127.0.0.1:5431:5432"
    restart: unless-stopped

  postgres2_service:
    container_name: postgres2_service
    image: postgres
    environment:
      POSTGRES_USER: user
      POSTGRES_PASSWORD: password
      POSTGRES_DB: postgres
      PGDATA: /data/postgres
    volumes:
      - postgres2:/data/postgres
      - ./init.sql:/docker-entrypoint-initdb.d/init.sql
    ports:
      - "127.0.0.1:5432:5432"
    restart: unless-stopped

volumes:
  postgres0:
  postgres1:
  postgres2: