add mysql and phpmyadmin to sail docker file

gistfile1.txt

mysql:
        platform: linux/x86_64
        image: 'mysql:8.0'
        ports:
            - '${FORWARD_DB_PORT:-3306}:3306'
        environment:
            MYSQL_ROOT_PASSWORD: '${DB_PASSWORD}'
            MYSQL_DATABASE: '${DB_DATABASE}'
            MYSQL_USER: '${DB_USERNAME}'
            MYSQL_PASSWORD: '${DB_PASSWORD}'
            MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
        volumes:
            - 'sailmysql:/var/lib/mysql'
        networks:
            - sail
        healthcheck:
          test: ["CMD", "mysqladmin", "ping"]

    phpmyadmin:
        image: phpmyadmin/phpmyadmin
        ports:
            - 8080:80
        environment:
            MYSQL_USERNAME: "${DB_USERNAME}"
            MYSQL_ROOT_PASSWORD: "${DB_PASSWORD}"
            PMA_HOST: mysql
        networks:
            - sail