Dockerfile

FROM ubuntu:22.04
ENV DEBIAN_FRONTEND=noninteractive

# 1) Install Xfce, x11vnc, Xvfb, xdotool, etc., but remove any screen lockers or power managers
RUN apt-get update && apt-get install -y \
    xfce4 \
    xfce4-goodies \
    x11vnc \
    xvfb \
    xdotool \
    imagemagick \
    x11-apps \
    sudo \
    software-properties-common \
    imagemagick \
 && apt-get remove -y light-locker xfce4-screensaver xfce4-power-manager || true \
 && apt-get clean && rm -rf /var/lib/apt/lists/*

# 2) Add the mozillateam PPA and install Firefox ESR
RUN add-apt-repository ppa:mozillateam/ppa \
 && apt-get update \
 && apt-get install -y --no-install-recommends firefox-esr \
 && update-alternatives --set x-www-browser /usr/bin/firefox-esr \
 && apt-get clean && rm -rf /var/lib/apt/lists/*

# 3) Create non-root user
RUN useradd -ms /bin/bash myuser \
    && echo "myuser ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
USER myuser
WORKDIR /home/myuser

# 4) Set x11vnc password ("secret")
RUN x11vnc -storepasswd secret /home/myuser/.vncpass

# 5) Expose port 5900 and run Xvfb, x11vnc, Xfce (no login manager)
EXPOSE 5900
CMD ["/bin/sh", "-c", "\
    Xvfb :99 -screen 0 1280x800x24 >/dev/null 2>&1 & \
    x11vnc -display :99 -forever -rfbauth /home/myuser/.vncpass -listen 0.0.0.0 -rfbport 5900 >/dev/null 2>&1 & \
    export DISPLAY=:99 && \
    startxfce4 >/dev/null 2>&1 & \
    sleep 2 && echo 'Container running!' && \
    tail -f /dev/null \
"]