Adding wmctrl

Dockerfile

@@ -267,6 +267,7 @@ RUN dpkg --add-architecture i386 \
         xz-utils \
         mate-themes \
         neofetch \
+		wmctrl \
     && sed -i \
         -e 's/^# *fr_FR.UTF-8 UTF-8/fr_FR.UTF-8 UTF-8/' \
         -e 's/^# *en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' \