Dockerfile

FROM debian:stretch

RUN apt-get update && apt-get -y install host telnet netcat procps net-tools iptables tcpdump && apt-get clean && rm -rf /var/cache/apt/archives /var/lib/apt/lists

EXPOSE 3000 4000 5000 6000

ADD netfilter_gw1.sh /netfilter.sh

CMD [ "/netfilter.sh" ]