composer
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
npm
npm config set registry http://registry.npm.taobao.org/
yarn
yarn config set registry http://registry.npm.taobao.org/
yarn 安装，去淘宝镜像中，找 node-sass 这个文件，最近因为这个文件导致 yarn 安装出错。
SASS_BINARY_SITE=http://npm.taobao.org/mirrors/node-sass yarn
持续更新中...
