https://blog.wongcw.com/2018/11/09/%e4%b8%89%e6%98%9f%e5%ae%a3%e5%b8%83-linux-on-dex%ef%bc%9a%e6%89%8b%e6%9c%ba%e7%a7%92%e5%8f%98-ubuntu-%e6%a1%8c%e9%9d%a2%e7%8e%af%e5%a2%83/