Added mostly working gnome-shell dockerfile with the extension instal…

…led. However, the extension is showing errors loading, but logs show nothing.

.dockerignore

@@ -2,3 +2,4 @@
 _build
 archlinux
 dist
+*.out

Dockerfile.ubuntu2004

@@ -0,0 +1,102 @@
+# Courtesy of https://github.com/darkdragon-001/Dockerfile-Ubuntu-Gnome
+FROM ubuntu:20.04
+
+ENV container docker
+ENV DEBIAN_FRONTEND noninteractive
+
+# Install locale
+ENV LANG C.UTF-8
+ENV LC_ALL C.UTF-8
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    locales && \
+    echo "$LANG UTF-8" >> /etc/locale.gen && \
+    locale-gen && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+# Install systemd
+RUN apt-get update && apt-get install -y \
+    dbus dbus-x11 systemd && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* &&\
+    dpkg-divert --local --rename --add /sbin/udevadm &&\
+    ln -s /bin/true /sbin/udevadm
+# TODO maybe disable other targets: https://developers.redhat.com/blog/2014/05/05/running-systemd-within-docker-container/
+RUN systemctl disable systemd-resolved
+VOLUME ["/sys/fs/cgroup"]
+STOPSIGNAL SIGRTMIN+3
+CMD [ "/sbin/init" ]
+
+# Install GNOME
+# NOTE if you want plain gnome, use: apt-get install -y --no-install-recommends gnome-session gnome-terminal and remove the modification of /etc/gdm3/custom.conf
+RUN apt-get update \
+  && apt-get install -y ubuntu-desktop fcitx-config-gtk gnome-tweak-tool gnome-usage git \
+  && apt-get clean \
+  && rm -rf /var/lib/apt/lists/* \
+  && sed -i 's/\[daemon\]/[daemon]\nInitialSetupEnable=false/' /etc/gdm3/custom.conf
+
+# Install applet dependencies.
+RUN apt-get update \
+  && apt-get install -y gir1.2-gtop-2.0 gir1.2-nm-1.0 gir1.2-clutter-1.0
+
+# Install TigerVNC server
+# TODO set VNC port in service file > exec command
+# TODO check if it works with default config file
+# NOTE tigervnc because of XKB extension: https://github.com/i3/i3/issues/1983
+RUN apt-get update \
+  && apt-get install -y tigervnc-common tigervnc-scraping-server tigervnc-standalone-server tigervnc-viewer tigervnc-xorg-extension \
+  && apt-get clean \
+  && rm -rf /var/lib/apt/lists/*
+# TODO fix PID problem: Type=forking would be best, but system daemon is run as root on startup
+#   ERROR tigervnc@:1.service: New main PID 233 does not belong to service, and PID file is not owned by root. Refusing.
+#   https://www.freedesktop.org/software/systemd/man/systemd.service.html#Type=
+#   https://www.freedesktop.org/software/systemd/man/systemd.unit.html#Specifiers
+#   https://wiki.archlinux.org/index.php/TigerVNC#Starting_and_stopping_vncserver_via_systemd
+# -> this should be fixed by official systemd file once released: https://github.com/TigerVNC/tigervnc/pull/838
+# TODO specify options like geometry as environment variables -> source variables in service via EnvironmentFile=/path/to/env
+# NOTE logout will stop tigervnc service -> need to manually start (gdm for graphical login is not working)
+COPY [email protected] /etc/systemd/system/[email protected]
+RUN systemctl enable tigervnc@:1
+EXPOSE 5901
+
+# Install noVNC
+# TODO novnc depends on net-tools until version 1.1.0: https://github.com/novnc/noVNC/issues/1075
+RUN apt-get update && apt-get install -y \
+    net-tools novnc \
+    && apt-get clean -y \
+    && rm -rf /var/lib/apt/lists/*
+RUN ln -s /usr/share/novnc/vnc_lite.html /usr/share/novnc/index.html
+# TODO specify options like ports as environment variables -> source variables in service via EnvironmentFile=/path/to/env
+COPY novnc.service /etc/systemd/system/novnc.service
+RUN systemctl enable novnc
+EXPOSE 6901
+
+# Create unprivileged user
+# NOTE user hardcoded in tigervnc.service
+# NOTE alternative is to use libnss_switch and create user at runtime -> use entrypoint script
+ARG UID=1000
+ARG USER=default
+RUN useradd ${USER} -u ${UID} -U -d /home/${USER} -m -s /bin/bash
+RUN apt-get update && apt-get install -y sudo && apt-get clean && rm -rf /var/lib/apt/lists/* && \
+    echo "${USER} ALL=(ALL) NOPASSWD: ALL" > "/etc/sudoers.d/${USER}" && \
+    chmod 440 "/etc/sudoers.d/${USER}"
+USER "${USER}"
+ENV USER="${USER}" \
+    HOME="/home/${USER}"
+WORKDIR "/home/${USER}"
+
+# Disable annoying Gnome welcome screen.
+RUN sudo bash -c 'echo "X-GNOME-Autostart-enabled=false" >> /etc/xdg/autostart/gnome-initial-setup-first-login.desktop'
+
+# Install extension.
+RUN mkdir -p $HOME/.local/share/gnome-shell/extensions
+COPY ./[email protected] $HOME/.local/share/gnome-shell/extensions/[email protected]
+RUN gnome-extensions enable [email protected]
+
+# Set up VNC
+RUN mkdir -p $HOME/.vnc
+COPY xstartup $HOME/.vnc/xstartup
+RUN echo "acoman" | vncpasswd -f >> $HOME/.vnc/passwd && chmod 600 $HOME/.vnc/passwd
+
+# switch back to root to start systemd
+USER root

README.md

@@ -73,7 +73,7 @@ extract the archive, open a shell into its directory, and run:
 Alternately, if you plan on doing development on the extension, or testing modifications, it's advised you checkout the Git repository and install a symlink. First, install git if you don't have it: (sudo apt-get install git-core, sudo pacman -S git, etc), then run:
 
     GIT_PROJECTS=~/git_projects
-    PROJECT_NAME=system-monitor@paradoxxx.zero.gmail.com
+    PROJECT_NAME=gnome-shell-system-monitor-applet
     mkdir $GIT_PROJECTS
     cd $GIT_PROJECTS
     git clone git://github.com/paradoxxxzero/gnome-shell-system-monitor-applet.git $PROJECT_NAME
@@ -82,6 +82,7 @@ Alternately, if you plan on doing development on the extension, or testing modif
     { [ -d "./$PROJECT_NAME" ] || [ -L "./$PROJECT_NAME" ]; } && rm -Rf "./$PROJECT_NAME"
     ln -s $GIT_PROJECTS/gnome-shell-system-monitor-applet/$PROJECT_NAME
     gnome-shell-extension-tool --enable-extension=$PROJECT_NAME
+    gnome-extensions enable [email protected]
 
 And restart gnome-shell (`Alt + F2`, then `r`) or reboot the machine.
 

build.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+set -e
+
+if [ -z "$USER" ]; then
+  USER=$(whoami)
+fi
+
+sudo docker build -t $USER/vnc-gnome \
+  --build-arg GID=$(id -g $USER) \
+  --build-arg UID=$(id -u $USER) \
+  --build-arg USER=$USER .

lg.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+gdbus call --session --dest org.gnome.Shell --object-path /org/gnome/Shell --method org.gnome.Shell.Eval 'Main.lookingGlass.toggle();'

novnc.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=noVNC remote desktop server
+After=tigervnc@:1.service
+
+[Service]
+Type=simple
+User=default
+ExecStart=/usr/share/novnc/utils/launch.sh --vnc localhost:5901 --listen 6901
+
+[Install]
+WantedBy=multi-user.target

reload.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+busctl --user call org.gnome.Shell /org/gnome/Shell org.gnome.Shell Eval s 'Meta.restart("Restarting...")'