Update Dockerfile

Dockerfile

@@ -1,6 +1,6 @@
 FROM debian:sid
 RUN apt update
-RUN apt install -y vim bash xfce4-terminal lubuntu-desktop aqemu sudo curl wget aria2 qemu-system-x86 htop chromium screen tigervnc-standalone-server python3-pip python3-websockify python3 git fuse libfuse2 xdotool
+RUN apt install -y vim bash xfce4-terminal mate-desktop-environment-extras aqemu sudo curl wget aria2 qemu-system-x86 htop chromium screen tigervnc-standalone-server python3-pip python3-websockify python3 git fuse libfuse2 xdotool
 RUN apt remove -y lxlock
 RUN apt remove -y light-locker xscreensaver-data xscreensaver
 RUN useradd -d /home/user -s /bin/bash -m -u 1000 user