How to allow unsafe ports in Chrome

http://douglastarr.com/how-to-allow-unsafe-ports-in-chrome

config

$ cat _config.yml
port: 6000

build for production

$rm site.tar (remove before build otherwise tar-self is repackaged too)
$JEKYLL_ENV=production bundle exec jekyll build
$tar zcvf site.tar _site/*

replace gem source mirror

gem sources --remove https://rubygems.org/
gem sources -a http://ruby.taobao.org/
gem sources -l
http://ruby.taobao.org/