fix: use Google Chrome .deb instead of Debian Sid chromium

Dockerfile

@@ -86,22 +86,11 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     dbus-user-session \
   && rm -rf /var/lib/apt/lists/*
 
-RUN curl -fsSL https://ftp-master.debian.org/keys/archive-key-12.asc \
-      | gpg --dearmor -o /etc/apt/keyrings/debian-archive.gpg \
-  && printf '%s\n' \
-      "deb [arch=amd64 signed-by=/etc/apt/keyrings/debian-archive.gpg] http://deb.debian.org/debian sid main" \
-      >/etc/apt/sources.list.d/debian-sid.list \
-  && printf '%s\n' \
-      "Package: *"            \
-      "Pin: release a=unstable" \
-      "Pin-Priority: 10"       \
-      ""                        \
-      "Package: chromium chromium-common chromium-sandbox" \
-      "Pin: release a=unstable" \
-      "Pin-Priority: 500"      \
-      >/etc/apt/preferences.d/chromium \
-  && apt-get update \
-  && apt-get install -y --no-install-recommends chromium \
+RUN curl -fsSL -o /tmp/google-chrome-stable.deb \
+      https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb \
+  && apt-get update -qq \
+  && apt-get install -y --no-install-recommends /tmp/google-chrome-stable.deb \
+  && rm -f /tmp/google-chrome-stable.deb /etc/apt/sources.list.d/google-chrome.list \
   && rm -rf /var/lib/apt/lists/*
 
 RUN useradd --create-home --shell /bin/bash node \

desktop/plank/dock1/launchers/google-chrome.dockitem

@@ -0,0 +1,2 @@
+[PlankDockItemPreferences]
+Launcher=file:///usr/share/applications/google-chrome.desktop

desktop/plank/dock1/settings

@@ -2,7 +2,7 @@
 Alignment=3
 AutoPinning=true
 CurrentWorkspaceOnly=false
-DockItems=xfce4-terminal.dockitem;;thunar.dockitem;;chromium.dockitem
+DockItems=xfce4-terminal.dockitem;;thunar.dockitem;;google-chrome.dockitem
 HideDelay=0
 HideMode=3
 IconSize=48