docker-compose.yml

  postgres:
        image: 'postgres:16.0'
        environment:
            POSTGRES_DB: dbhost
            POSTGRES_USER: user
            POSTGRES_PASSWORD: password
        deploy:
            placement:
                constraints:
                    - node.role == manager
        # ports:
        #     - '5432:5432'
        healthcheck:
            test: ["CMD-SHELL", "pg_isready -U postgres"]
            interval: 10s
            timeout: 5s
            retries: 5
            start_period: 10s                
        volumes:
            - 'postgres_data:/var/lib/postgresql/data'
        networks:
            - db-network