Centos7 安装docker

1.配置yum源

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.cloud.tencent.com/repo/centos7_base.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.cloud.tencent.com/repo/epel-7.repo
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum clean all
yum makecache

2.安装依赖包

yum install -y yum-utils device-mapper-persistent-data lvm2

3.安装docker

yum install -y docker-ce docker-ce-cli containerd.io

4.开启docker服务

systemctl start docker

5.验证docker运行情况

*在本地没有相应名称镜像的情况下，会自动向docker hub拉取

docker run hello-world

6.配置docker镜像加速器

curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://f1361db2.m.daocloud.io