nodesource 镜像被移除，初始化软件源失败

[yy158125]

https://mirrors4.tuna.tsinghua.edu.cn/news/remove-nodesource/

[DengSihan]

把 16.04/install.sh 中的

echo 'deb https://mirrors.tuna.tsinghua.edu.cn/nodesource/deb_10.x xenial main' > /etc/apt/sources.list.d/nodesource.list
echo 'deb-src https://mirrors.tuna.tsinghua.edu.cn/nodesource/deb_10.x xenial main' >> /etc/apt/sources.list.d/nodesource.list

注释掉，再执行

/root/laravel-ubuntu-init/16.04/install.sh