Optimize build parameters

plasma/webtop:plasma.sh

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+## Dockerfile
+cat >Dockerfile <<- 'Dockerfile'
+# syntax = docker/dockerfile:1.2
+FROM myvnc/base
+USER root
+
+# X session environment variable
+ENV STARTXBIN startplasma-x11
+
+# Install packages
+RUN --mount=type=cache,sharing=locked,target=/var/cache/pacman \
+    pacman -Syu --ask 4 --needed \
+    tigervnc \
+    cuda openssh vim pacman-contrib rsync git \
+    plasma konsole kate dolphin kompare kcalc \
+    jack2 ttf-dejavu \
+    firefox firefox-decentraleyes firefox-ublock-origin \
+    torbrowser-launcher \
+    shotwell ffmpegthumbs ark okular \
+    remmina libvncserver \
+    && pacman -Scc --ask 4 \
+    && echo 'Cmnd_Alias MISCELLANEOUS =   /usr/bin/pacman -S' >/etc/sudoers.d/01-MISCELLANEOUS
+
+# configure nvidia container runtime
+# https://github.com/NVIDIA/nvidia-container-runtime#environment-variables-oci-spec
+ENV NVIDIA_VISIBLE_DEVICES all
+ENV NVIDIA_DRIVER_CAPABILITIES compute,utility
+
+# Tigervnc
+COPY 10-tigervnc.sh 90-tigervnc.sh /app/init.d/
+RUN chmod +x /app/init.d/*
+
+# Reset user home directory
+USER user
+WORKDIR /home/user
+Dockerfile
+
+## Plasma/tigervnc Setup
+cat >10-tigervnc.sh <<- '10-tigervnc.sh'
+#!/usr/bin/env bash
+# Check for MYVNC_VNCPASS variable
+if [ -z ${MYVNC_VNCPASS} ]
+then
+    echo "MYVNC_VNCPASS env variable is missing"
+    exit 1
+fi
+
+# Configure tigervnc auth
+if [ ! -f ~/.vnc/passwd ]
+then
+    echo "${MYVNC_VNCPASS}" | vncpasswd -f >~/.vnc/passwd
+    chmod 0600 ~/.vnc/passwd
+fi
+
+# Remove VNCPASS env
+unset MYVNC_VNCPASS
+
+# VNC xstartup
+install /dev/stdin ~/.vnc/xstartup <<- xstartup
+#!/usr/bin/env bash
+unset SESSION_MANAGER
+unset DBUS_SESSION_BUS_ADDRESS
+exec ${STARTXBIN}
+xstartup
+
+# Turn vnc sharing on/off
+if [[ ${MYVNC_VNCSHARING} == "true" ]] || [[ ${MYVNC_VNCSHARING} == "1" ]]
+then
+    _MYVNC_VNCSHARING=alwaysshared
+else
+    _MYVNC_VNCSHARING=nevershared
+fi
+
+# VNC config
+cat >~/.vnc/config <<- vncconfig
+session=plasmax11
+dpi=192
+geometry=1920x1080
+framerate=60
+depth=32
+${_MYVNC_VNCSHARING}
+vncconfig
+
+# Disable KDE screenlock
+cat >~/.config/kscreenlockerrc <<- 'kscreenlockerrc'
+[Daemon]
+Autolock=false
+LockOnResume=false
+Timeout=0
+kscreenlockerrc
+
+# SSH config
+if [ -f ~/.ssh/id_ed25519 ]
+then
+    chmod 0600 ~/.ssh/id_ed25519
+fi
+10-tigervnc.sh
+
+## TigerVNC launch script
+cat >90-tigervnc.sh <<- '90-tigervnc.sh'
+#!/usr/bin/env bash
+# Launch Tigervnc
+/usr/bin/dbus-launch vncserver :0 &
+90-tigervnc.sh
+
+## Docker build
+DOCKER_BUILDKIT=1 docker build ./. \
+    --tag myvnc/webtop:plasma \
+    && rm -f Dockerfile *.sh