version: '3'
services:
    max:
        image: max
        depends_on:
            - postgresql
        ports:
            - 127.0.0.1:8000:8000/tcp
        environment:
            - PGSQL_HOST=postgresql
            - PGSQL_USER=max
            - PGSQL_PASSWORD=max
            - PGSQL_NAME=max
        networks:
            - postgresql
            - uplink
    postgresql:
        image: postgres:13
        environment:
            - POSTGRES_USER=max
            - POSTGRES_PASSWORD=max
            - POSTGRES_DB=max
        networks:
            - postgresql
networks:
    postgresql:
        internal: true
    uplink: