version: "3"

services:
  postgres:
    container_name: postgres
    image: postgres:14.2
    environment:
      - POSTGRES_USER=username
      - POSTGRES_PASSWORD=password
      # - POSTGRES_DB=database
    volumes:
      - ./postgres:/var/lib/postgresql/data
    ports:
      - "5432:5432"
    restart: unless-stopped
    networks:
      nginx:
        aliases:
          - postgres

networks:
  nginx:
    external: true