fix build command

use latest firefox

upgrade to marionette-go 3.0.1

forget to update dockerfile

update doc

clean up firefox profile data

bump marionette version to fix fx65 NewWindow command bug

migrate to marionette-go

support few more options

Now supports concurrent page-loading

[SKIP CI] update client script

use outerHTML, no longer use inaccurate html tag.

install latest firefox and install preset config

update proj import path

update readme, add another warning message