视频地址：
笔记：
1.拉取ubuntu镜像并运行
docker pull ubuntu
docker run -it ubuntu bash
2.先添加阿里云的源,编辑文件/etc/apt/sources.list
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
apt-get update
3.添加nginx的源并安装
apt-get install curl gnupg2 ca-certificates lsb-release
echo “deb http://nginx.org/packages/ubuntu `lsb_release -cs` nginx” | tee /etc/apt/sources.list.d/nginx.list
curl -fssl https://nginx.org/keys/nginx_signing.key | apt-key add –
apt-key fingerprint abf5bd827bd9bf62
apt-get update
apt-get install nginx
