环境准备

检查系统环境

[root@localhost ~]# uname -r
3.10.0-1062.el7.x86_64

关闭防火墙

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

设置yum镜像源

添加镜像源

# base repo
cd /etc/yum.repos.d
mv CentOS-Base.repo CentOS-Base.repo.bak
curl -o CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
sed -i 's/gpgcheck=1/gpgcheck=0/g' /etc/yum.repos.d/CentOS-Base.repo

# docker repo
curl -o docker-ce.repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

https://developer.aliyun.com/mirror/centos?spm=a2c6h.13651102.0.0.3e221b11JC64Pb
https://developer.aliyun.com/mirror/docker-ce?spm=a2c6h.13651102.0.0.3e221b11UHOUDR

更新缓存

yum clean all  
yum makecache  
yum repolist

安装 Docker

安装

yum install docker-ce-18.06.3.ce

启动

systemctl enable docker --now

查看docker状态

systemctl status docker

运行nginx镜像测试docker环境

docker run  -p 8080:80   --name nginx nginx 

image.png

如果想让容器后台运行 添加参数 -d ，如果想让容器开机运行 添加参数 --restart=always

docker run  -p 8080:80  -d  --restart=always   --name nginx nginx