docker以及虚拟机安装

1. 安装docker：

https://blog.csdn.net/Java_ZZZZZ/article/details/147755857

2. 通过docker下载centos

https://zhuanlan.zhihu.com/p/1883440795513771901

3. 二次启动Centos

docker start cff0fdc474a8a8e5d577c0802cfc40ac1fd237f0dbf438f0096179c65c75403ddocker exec -it cff0 /bin/bash

4. 在虚拟机中安装git

yum install -y git

5. 安装虚拟机

https://blog.csdn.net/cygqtt/article/details/136385861

6. 装yum：注意：最好使用清华源（不容易出错），本人这里采用阿里源，出错很多。

[base]
name=CentOS-8.4.2105 - Base - mirrors.aliyun.com
baseurl=https://mirrors.aliyun.com/centos-vault/8.4.2105/BaseOS/$basearch/os/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-Official

[appstream]
name=CentOS-8.4.2105 - AppStream - mirrors.aliyun.com
baseurl=https://mirrors.aliyun.com/centos-vault/8.4.2105/AppStream/$basearch/os/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-Official

[extras]
name=CentOS-8.4.2105 - Extras - mirrors.aliyun.com
baseurl=https://mirrors.aliyun.com/centos-vault/8.4.2105/extras/$basearch/os/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-Official

7. 安装docker:

资源：

https://mirrors-i.tuna.tsinghua.edu.cn/help/docker-ce/

https://blog.csdn.net/duansamve/article/details/128402654?ops_request_misc=&request_id=&biz_id=102&utm_term=Centos8安装docker&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-3-128402654.142^v102^pc_search_result_base3&spm=1018.2226.3001.4187

SSL35错误：# curl (35) SSL connect error 解决方法：_curl: (35) ssl connect error-CSDN博客

查看docker版本：docker --version