FROM debian:buster MAINTAINER Chris EXPOSE 53 53/udp WORKDIR /root # Install dependencies and sources RUN \ apt-get update \ && apt-get install --yes dnsutils bind9 \ # Trim down the image && apt-get clean \ && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* VOLUME /etc/bind/ ENTRYPOINT ["/usr/sbin/named"] CMD ["-f"]