initial

Dockerfile

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+FROM kasmweb/core-ubuntu-jammy:develop
+USER root
+
+ENV HOME /home/kasm-default-profile
+ENV STARTUPDIR /dockerstartup
+ENV INST_SCRIPTS $STARTUPDIR/install
+ENV NVIDIA_DRIVER_CAPABILITIES=graphics,compat32,utility,compute
+
+WORKDIR $HOME
+
+######### Customize Container Here ###########
+
+COPY install_upscayl.sh $INST_SCRIPTS/upscayl/
+RUN bash $INST_SCRIPTS/upscayl/install_upscayl.sh  && rm -rf $INST_SCRIPTS/upscayl/
+
+COPY custom_startup.sh $STARTUPDIR/custom_startup.sh
+RUN chmod +x $STARTUPDIR/custom_startup.sh
+RUN chmod 755 $STARTUPDIR/custom_startup.sh
+
+# Update the desktop environment to be optimized for a single application
+RUN cp $HOME/.config/xfce4/xfconf/single-application-xfce-perchannel-xml/* $HOME/.config/xfce4/xfconf/xfce-perchannel-xml/
+RUN cp /usr/share/extra/backgrounds/bg_kasm.png /usr/share/extra/backgrounds/bg_default.png
+RUN apt-get remove -y xfce4-panel
+
+
+######### End Customizations ###########
+
+RUN chown 1000:0 $HOME
+RUN $STARTUPDIR/set_user_permission.sh $HOME
+
+ENV HOME /home/kasm-user
+WORKDIR $HOME
+RUN mkdir -p $HOME && chown -R 1000:0 $HOME
+
+USER 1000

custom_startup.sh

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+#!/usr/bin/env bash
+set -ex
+START_COMMAND="upscayl"
+PGREP="upscayl"
+export MAXIMIZE="true"
+export MAXIMIZE_NAME="Upscayl"
+MAXIMIZE_SCRIPT=$STARTUPDIR/maximize_window.sh
+DEFAULT_ARGS=""
+ARGS=${APP_ARGS:-$DEFAULT_ARGS}
+
+options=$(getopt -o gau: -l go,assign,url: -n "$0" -- "$@") || exit
+eval set -- "$options"
+
+while [[ $1 != -- ]]; do
+    case $1 in
+        -g|--go) GO='true'; shift 1;;
+        -a|--assign) ASSIGN='true'; shift 1;;
+        -u|--url) OPT_URL=$2; shift 2;;
+        *) echo "bad option: $1" >&2; exit 1;;
+    esac
+done
+shift
+
+# Process non-option arguments.
+for arg; do
+    echo "arg! $arg"
+done
+
+FORCE=$2
+
+kasm_exec() {
+    if [ -n "$OPT_URL" ] ; then
+        URL=$OPT_URL
+    elif [ -n "$1" ] ; then
+        URL=$1
+    fi
+
+    # Since we are execing into a container that already has the browser running from startup,
+    #  when we don't have a URL to open we want to do nothing. Otherwise a second browser instance would open.
+    if [ -n "$URL" ] ; then
+        /usr/bin/filter_ready
+        /usr/bin/desktop_ready
+        bash ${MAXIMIZE_SCRIPT} &
+        $START_COMMAND $ARGS $OPT_URL
+    else
+        echo "No URL specified for exec command. Doing nothing."
+    fi
+}
+
+kasm_startup() {
+    if [ -n "$KASM_URL" ] ; then
+        URL=$KASM_URL
+    elif [ -z "$URL" ] ; then
+        URL=$LAUNCH_URL
+    fi
+
+    if [ -z "$DISABLE_CUSTOM_STARTUP" ] ||  [ -n "$FORCE" ] ; then
+
+        echo "Entering process startup loop"
+        set +x
+        while true
+        do
+            if ! pgrep -x $PGREP > /dev/null
+            then
+                /usr/bin/filter_ready
+                /usr/bin/desktop_ready
+                set +e
+                bash ${MAXIMIZE_SCRIPT} &
+                $START_COMMAND $ARGS $URL
+                set -e
+            fi
+            sleep 1
+        done
+        set -x
+
+    fi
+
+}
+
+if [ -n "$GO" ] || [ -n "$ASSIGN" ] ; then
+    kasm_exec
+else
+    kasm_startup
+fi

install_upscayl.sh

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+#!/usr/bin/env bash
+set -ex
+
+# If you require a specific version of Upscayl - rather than the latest - it can be
+# hardcoded by setting this variable and rebuilding the container.
+#UPSCAYL_VERSION="3.2.1"https://github.com/upscayl/upscayl/releases/download/v2.9.1/upscayl-2.9.1-linux.deb
+
+if [ -z ${UPSCAYL_VERSION+x} ]
+then
+    UPSCAYL_VERSION=$(curl -sL https://github.com/upscayl/upscayl/releases/latest/download/latest-linux.yml | grep version | grep -oP 'version: \K[0-9.]+')
+fi
+curl -o /tmp/upscayl.deb -L "https://github.com/upscayl/upscayl/releases/download/v${UPSCAYL_VERSION}/upscayl-${UPSCAYL_VERSION}-linux.deb"
+dpkg -i  /tmp/upscayl.tar.xz
+
+rm -rf /tmp/* /var/lib/apt/lists/* /var/tmp/*