FROM registry.hub.docker.com/library/ubuntu:20.04

RUN export DEBIAN_FRONTENT=noninteractive \
    && apt-get -y update \
    && apt-get install -y kmod file curl net-tools ppp \
    && rm -rf /var/lib/apt/lists/* \
    && curl "https://sslvpn.demo.sonicwall.com/NetExtender.x86_64.tgz" | tar xz \
    && cd netExtenderClient \
    && yes | ./install \
    && cd .. \
    && rm -r netExtenderClient

ENTRYPOINT [ "/usr/sbin/netExtender" ]