docker-compose-slave.yml

version: "2"

services:
    slave:
        build: powerdns
        image: powerdns
        restart: always
        ports:
            - "53:53"
            - "53:53/udp"
        volumes:
            - "database:/etc/powerdns/sqlite3"
        environment:
            PDNS_TYPE: slave
            MASTER_IP: x.x.x.x
            MASTER_DNS: f.q.d.n
            ADMIN_PASSWORD: "1234"
        logging:
          options:
            max-size: 25k

volumes:
    database:
        driver: local