CentOS安装Docker、Docker Compose、更换

1、安装之前卸载已存在的docker，新系统跳过

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

2、使用 repository 安装 docker ce：官方的Docker源速度简直无法忍受，所以上阿里云

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
systemctl start docker

 # 开机启动 
systemctl enable docker

3、安装 docker-compose

curl -L https://github.com/docker/compose/releases/download/1.23.2/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose

4、为Docker配置阿里云加速

sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://jarp5cr2.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker