version: "3"
services:
  postgres:
    image: postgres:15
    restart: unless-stopped
    ports:
      - 5432:5432/tcp
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres123
      - POSTGRES_DB=vmail
    volumes:
      - postgres:/var/lib/postgresql/15/main
volumes:
  postgres: {}