Win10子系統 linux（Ubuntu18.04） 安裝Docker

1）原文件備份
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
2）編輯源列表文件
sudo vim /etc/apt/sources.list
3）將原來的列表刪除，添加以下內容（中科大鏡像源）
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
4）運行sudo apt-get update

2.命令行執行：sudo systemctl start docker，結果會報錯

System has not been booted with systemd as init system (PID 1). Can’t operate.
經百度查找：
https://askubuntu.com/questions/1049852/how-to-solve-system-has-not-been-booted-with-systemd-as-init-system-pid-1，
這個網址給有的人給出了正確的解決方案

複製出圈出的網址：https://blog.jayway.com/2017/04/19/running-docker-on-bash-on-windows/
直接訪問，按照以下的指令便可安裝docker成功，注意#是註釋，不要執行

# Install packages to allow apt to use a repository over HTTPS
$ sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
# Add Docker's official GPG key
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
# Set up the repository
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
# Update source lists
sudo apt-get update
# Install Docker
sudo apt-get install docker-ce

docker --version，能正確顯示版本號就是安裝成功了