rename to .docker, fixes #95.

.docker/xfce/supervisord.conf

@@ -0,0 +1,11 @@
+[program:xfce]
+environment=HOME="/home/%(ENV_USER)s",USER="%(ENV_USER)s",DISPLAY="%(ENV_DISPLAY)s"
+command=/usr/bin/startxfce4
+stopsignal=INT
+autorestart=true
+priority=500
+user=%(ENV_USER)s
+stdout_logfile=/var/log/neko/xfce.log
+stdout_logfile_maxbytes=100MB
+stdout_logfile_backups=10
+redirect_stderr=true