Docker + MySQL + Traefik

docker-compose.yml

version: '2'

services:
    traefik:
        image: traefik
        container_name: "traefik_site"
        command: --web --docker --docker.domain=docker.localhost --logLevel=DEBUG
        ports:
            - "80:80"
            - "8080:8080"
        volumes:
            - /var/run/docker.sock:/var/run/docker.sock
            - /dev/null:/traefik.toml

    wordpress:
        image: wordpress
        container_name: "wordpress_site"
        labels:
            - "traefik.frontend.rule=Host:www.site.net,Host:site.net"
            - "traefik.docker.network=traefik"
        environment:
            - WORDPRESS_DB_HOST=mysql:3306
            - WORDPRESS_DB_USER=wp_db_u
            - WORDPRESS_DB_PASSWORD=a132t132t
            - WORDPRESS_DB_NAME=wp_db
        volumes:
            - wordpress-data:/var/www/html
        networks:
            - traefik
            - back-end
        links:
            - mysql

    mysql:
        image: mysql:5.7
        container_name: "mysql_site"
        labels:
            - "traefik.enable=false"
        environment:
            - MYSQL_ROOT_PASSWORD=lalalalalal
            - MYSQL_DATABASE=wp_db
            - MYSQL_USER=wp_db_u
            - MYSQL_PASSWORD=a132t132t
        volumes:
            - mysql-data:/var/lib/mysql
        networks:
            - back-end

volumes:
    wordpress-data:
        driver: local
    mysql-data:
        driver: local

networks:
    traefik:
        external:
            name: traefik
    back-end:
        driver: bridge