FROM ubuntu:focal

ENV DISPLAY=:1 \
    VNC_PORT=8443 \
    VNC_RESOLUTION=1280x720 \
    MAX_FRAME_RATE=24 \
    VNCOPTIONS="-PreferBandwidth -DynamicQualityMin=4 -DynamicQualityMax=7" \
    HOME=/home/user \
    TERM=xterm \
    STARTUPDIR=/dockerstartup \
    INST_SCRIPTS=/dockerstartup/install \
    KASM_RX_HOME=/dockerstartup/kasmrx \
    DEBIAN_FRONTEND=noninteractive \
    VNC_COL_DEPTH=24 \
    VNC_RESOLUTION=1280x1024 \
    VNC_PW=vncpassword \
    VNC_USER=user \
    VNC_VIEW_ONLY_PW=vncviewonlypassword \
    LD_LIBRARY_PATH=/usr/local/lib/ \
    OMP_WAIT_POLICY=PASSIVE \
    SHELL=/bin/bash \
    SINGLE_APPLICATION=0 \
    KASMVNC_BUILD_OS=ubuntu \
    KASMVNC_BUILD_OS_CODENAME=bionic

EXPOSE $VNC_PORT

WORKDIR $HOME

### REQUIRED STUFF ###

RUN apt-get update && apt-get install -y supervisor xfce4 xfce4-terminal xterm libnss-wrapper gettext wget
RUN apt-get purge -y pm-utils xscreensaver*
RUN apt-get update && apt-get install -y vim less
RUN apt-get update && apt-get -y install lsb-release

RUN echo 'source $STARTUPDIR/generate_container_user' >> $HOME/.bashrc

RUN mkdir -p $STARTUPDIR
COPY startup/ $STARTUPDIR

### START CUSTOM STUFF ####

ARG KASMVNC_PACKAGE_DIR
COPY $KASMVNC_PACKAGE_DIR/kasmvncserver_*.deb /tmp
RUN dpkg -i /tmp/*.deb; apt-get -yf install

RUN mkdir ~/.vnc && echo '/usr/bin/xfce4-session &' >> ~/.vnc/xstartup && \
  chmod +x ~/.vnc/xstartup

### END CUSTOM STUFF ###

RUN chown -R 1000:0 $HOME
USER 1000:ssl-cert
WORKDIR $HOME

ENTRYPOINT [ "/dockerstartup/vnc_startup.sh" ]