Docker compose for Postgres

docker-compose.yml

version: '3.8'

services:
  postgres:
    image: postgres:16
    container_name: postgres
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
      - POSTGRES_DB=postgres
    volumes:
      - postgres_data:/var/lib/postgresql/data
    networks:
      - nginxmanager_default
    restart: always

volumes:
  postgres_data:
    name: postgres_data

networks:
  nginxmanager_default:
    external: true