docker-compose.yml

version: '2'
services:
    testing_master:
        image: mariadb:latest
        network_mode: "host"
        environment:
            MYSQL_ALLOW_EMPTY_PASSWORD: Y
        volumes:
            - ./sql/master:/docker-entrypoint-initdb.d
            - ./mysql:/var/lib/mysql/
        command: mysqld --log-bin=binlog --binlog-format=ROW --server-id=3000 --port=3000 --log-slave-updates

    testing_slave1:
        image: mariadb:latest
        network_mode: "host"
        depends_on:
            - testing_master
        environment:
            MYSQL_ALLOW_EMPTY_PASSWORD: Y
        volumes:
            - ./sql/slave:/docker-entrypoint-initdb.d
        command: mysqld --log-bin=binlog --binlog-format=ROW --server-id=3001 --port=3001 --log-slave-updates

    testing_slave2:
        image: mariadb:latest
        network_mode: "host"
        depends_on:
            - testing_master
        environment:
            MYSQL_ALLOW_EMPTY_PASSWORD: Y
        volumes:
            - ./sql/slave:/docker-entrypoint-initdb.d
        command: mysqld --log-bin=binlog --binlog-format=ROW --server-id=3002 --port=3002 --log-slave-updates

    testing_slave3:
        image: mariadb:latest
        network_mode: "host"
        depends_on:
            - testing_master
        environment:
            MYSQL_ALLOW_EMPTY_PASSWORD: Y
        volumes:
            - ./sql/slave:/docker-entrypoint-initdb.d
        command: mysqld --log-bin=binlog --binlog-format=ROW --server-id=3003 --port=3003 --log-slave-updates