Added Containerized example Doom

docker/Dockerfile.ubuntu18.doom

@@ -0,0 +1,62 @@
+FROM ubuntu:18.04
+
+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=1
+
+EXPOSE $VNC_PORT
+
+WORKDIR $HOME
+
+### REQUIRED STUFF ###
+
+RUN apt-get update && apt-get install -y supervisor xfce4 xfce4-terminal xterm libnss-wrapper gettext libjpeg-dev wget
+RUN apt-get purge -y pm-utils xscreensaver*
+
+RUN mkdir -p $STARTUPDIR
+COPY src/startup/ $STARTUPDIR
+RUN mkdir -p $HOME/.config/xfce4/xfconf/xfce-perchannel-xml
+COPY src/xfce/ $HOME/.config/xfce4/xfconf/xfce-perchannel-xml
+# overwite default with single app config
+RUN mv $HOME/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-desktop-single-app.xml $HOME/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-desktop.xml
+RUN echo 'source $STARTUPDIR/generate_container_user' >> $HOME/.bashrc
+
+# KasmVNC install
+RUN wget -qO- https://github.com/kasmtech/KasmVNC/releases/download/v0.9.1-beta/KasmVNC_0.9.1-beta_Ubuntu_18.04.tar.gz | tar xz --strip 1 -C /
+
+### START CUSTOM STUFF ####
+
+# We need the server to use a fixed resulution and have the client scale, which is not the default behavior of KasmVNC
+RUN sed -i "s#UI.initSetting('resize', 'remote');#UI.initSetting('resize', 'scale');#" /usr/local/share/kasmvnc/www/app/ui.js
+
+RUN apt-get install -y chocolate-doom doom-wad-shareware prboom-plus freedoom
+
+# Use software rendering, comment this out if you have a GPU
+#RUN mkdir -p $HOME/.local/share/chocolate-doom && \
+#	echo 'force_software_renderer    1' > $HOME/.local/share/chocolate-doom/chocolate-doom.cfg
+
+
+### END CUSTOM STUFF ###
+
+RUN chown -R 1000:0 $HOME
+USER 1000
+WORKDIR $HOME
+
+ENTRYPOINT [ "/dockerstartup/vnc_startup.sh", "xfce4-terminal", "-e", "/usr/games/chocolate-doom" ]