In your docker-compose.yaml:

    ```
    version: "2"

    services:
        nginx-proxy:
            image: jwilder/nginx-proxy
            container_name: nginx-proxy
            ports:
              - "80:80"
            volumes:
              - /var/run/docker.sock:/tmp/docker.sock:ro
        db:
            container_name: wp-multisite-wp
            image: mysql:5.7
            volumes:
              - "./.data/db:/var/lib/mysql"
            restart: always
            environment:
              MYSQL_ROOT_PASSWORD: wordpress
              MYSQL_DATABASE: wordpress
              MYSQL_USER: wordpress
              MYSQL_PASSWORD: wordpress
        wordpress:
            container_name: wp-multisite
            ports:
                - 5000:80
            depends_on:
              - db
            image: wordpress:latest
            links:
                - db
            restart: always
            environment:
                WORDPRESS_DB_HOST: db:3306
                WORDPRESS_DB_PASSWORD: wordpress
                VIRTUAL_HOST: whoami.local
    ```yaml

Add to your hosts file:

    #Docker
    192.168.99.100 whoami.local