FROM ubuntu:22.04

LABEL maintainer="alexz"
LABEL description="Cisco Secure Client VPN in Docker with noVNC"
LABEL version="5.1.14.145"

ENV DEBIAN_FRONTEND=noninteractive
ENV container=docker

# VNC/noVNC settings
ENV DISPLAY=:1
ENV VNC_PORT=5901
ENV NOVNC_PORT=6080

# Install systemd and dependencies
RUN apt-get update && apt-get install -y \
    systemd \
    systemd-sysv \
    dbus \
    dbus-x11 \
    libgtk-3-0 \
    libglib2.0-0 \
    libstdc++6 \
    iptables \
    libxml2 \
    network-manager \
    zlib1g \
    policykit-1 \
    xdg-utils \
    libwebkit2gtk-4.0-37 \
    tigervnc-standalone-server \
    tigervnc-common \
    novnc \
    websockify \
    openbox \
    xterm \
    procps \
    net-tools \
    curl \
    iproute2 \
    iputils-ping \
    nano \
    x11vnc \
    xvfb \
    fluxbox \
    xdotool \
    oathtool \
    xclip \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Remove unnecessary systemd services that cause issues in containers
RUN rm -f /lib/systemd/system/multi-user.target.wants/* \
    /etc/systemd/system/*.wants/* \
    /lib/systemd/system/local-fs.target.wants/* \
    /lib/systemd/system/sockets.target.wants/*udev* \
    /lib/systemd/system/sockets.target.wants/*initctl* \
    /lib/systemd/system/sysinit.target.wants/systemd-tmpfiles-setup* \
    /lib/systemd/system/systemd-update-utmp*

# Copy and extract Cisco Secure Client
COPY cisco-secure-client-full.tar.gz /tmp/
RUN tar -xzf /tmp/cisco-secure-client-full.tar.gz -C / && rm /tmp/cisco-secure-client-full.tar.gz

# Enable vpnagentd service
RUN systemctl enable vpnagentd.service

# vnc.service - started by systemd, calls /opt/scripts/startup-vnc.sh
# The entrypoint symlinks /shared/startup-vnc.sh -> /opt/scripts/startup-vnc.sh at runtime
RUN mkdir -p /opt/scripts && \
    echo 'W1VuaXRdCkRlc2NyaXB0aW9uPVZOQyBhbmQgbm9WTkMgU2VydmVyCkFmdGVyPW5ldHdvcmsudGFyZ2V0IHZwbmFnZW50ZC5zZXJ2aWNlCgpbU2VydmljZV0KVHlwZT1zaW1wbGUKRXhlY1N0YXJ0PS9vcHQvc2NyaXB0cy9zdGFydHVwLXZuYy5zaApSZXN0YXJ0PWFsd2F5cwpSZXN0YXJ0U2VjPTUKRW52aXJvbm1lbnQ9SE9NRT0vcm9vdApFbnZpcm9ubWVudD1VU0VSPXJvb3QKCltJbnN0YWxsXQpXYW50ZWRCeT1tdWx0aS11c2VyLnRhcmdldAo=' \
    | base64 -d > /lib/systemd/system/vnc.service && \
    chmod 644 /lib/systemd/system/vnc.service && \
    systemctl enable vnc.service

VOLUME ["/sys/fs/cgroup"]

EXPOSE 5901 6080

STOPSIGNAL SIGRTMIN+3