removing wesnoth adding xfce

.m1k1o/xfce/Dockerfile

@@ -0,0 +1,18 @@
+FROM m1k1o/neko:base
+
+#
+# install firefox-esr
+RUN set -eux; apt-get update; \
+    apt-get install -y --no-install-recommends xfce4 xfce4-terminal sudo; \
+    #
+    # add user to sudoers
+    usermod -aG sudo neko; \
+    echo "neko:neko" | chpasswd; \
+    # clean up
+    apt-get clean -y; \
+    rm -rf /var/lib/apt/lists/* /var/cache/apt/*
+
+#
+# copy configuation files
+COPY supervisord.conf /etc/neko/supervisord/xfce.conf
+