dockerfile

from debian:buster-slim

run apt-get update \
 && apt-get upgrade -y

run apt-get install --no-install-recommends -y \
    fluxbox           \
    openssl           \
    websockify        \
    x11vnc            \
    xterm             \
    xvfb

run apt autoremove -y

run groupadd oracle && mkdir /home/oracle     \
 && useradd -s /bin/bash -g oracle oracle     \
 && cp /etc/skel/.bashrc /home/oracle/.bashrc \
 && echo "cd ~/share" >> /home/oracle/.bashrc

copy ./entrypoint.sh /home/oracle/

expose 5900/tcp

entrypoint ["/bin/bash", "/home/oracle/entrypoint.sh"]