CentOS8安装Docker、Docker Compose、更换阿里源

卸载旧版本

如果以前安装过 Docker ，请卸载它们以及相关的依赖项。

sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-selinux \
                  docker-engine-selinux \
                  docker-engine

使用阿里云源进行安装（注意：安装Docker Compose必须先安装Docker）

sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sudo yum install docker-ce
# 启动
sudo systemctl start docker
# 开机启动
sudo systemctl enable docker

Docker Compose 安装

sudo curl -L "https://github.com/docker/compose/releases/download/1.24.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

测试是否成功

docker-compose --version
# docker-compose version 1.24.1, build 4667896b

为Docker配置阿里云加速

• 进入阿里云的容器镜像服务

快速链接： 容器镜像服务

可以免费获得一个加速器地址

• 配置镜像加速器

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://aip0wjyl.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker