added some docker configs

dockerfiles/build_firefox.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+docker build -f firefox.dockerfile . -t firefox
+docker run -d --rm -p 5900:5900 --name firefox_vnc -e HOME=/ firefox x11vnc -forever -create
+sleep 5
+vncviewer localhost
+docker stop firefox_vnc
+
+