Dockerfile

FROM debian:bullseye

ENV LANG=C.UTF-8 DEBIAN_FRONTEND=noninteractive
RUN apt-get -q -y update && \
    apt-get -q -y install tightvncserver \
                          openssh-server \
                          rdesktop \
                          websockify && \
    apt-get -q -y clean && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
    sed -i 's/main/main contrib non-free/g' /etc/apt/sources.list; \
    \
    echo "X11UseLocalhost no" >> /etc/ssh/sshd_config; \
    \
    touch /var/log/null && \
    chmod 444 /var/log/null; \
    \
    mkdir /opt/websockify

ADD app-sh.sh /bin/app-sh.sh
RUN useradd -ms /bin/app-sh.sh app

ADD ssh-app.sh /bin/ssh-app.sh

EXPOSE 5901 80 22

ADD entrypoint.sh /opt/entrypoint.sh

ENTRYPOINT ["/opt/entrypoint.sh"]
CMD ["/bin/bash", "-c", "tail -F /var/log/null /home/app/.vnc/*.log"]


COPY xsession /home/app/.xsession

RUN mkdir /home/app/.vnc && \
    touch /home/app/.vnc/rdesktop.log; \
    chown app.app -R /home/app/.xsession /home/app/.vnc; \
    echo '#!/bin/bash\nrdesktop -x m -g "$VNC_SCREEN_RESOLUTION" -P -D $RDESKTOP_OPTS $RDESKTOP_SERVER &>> /home/app/.vnc/rdesktop.log\n' > /bin/ssh-app.sh;