Centos7 安装Docker

1.卸载旧版本Docker

$ 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. 安装必要工具

$ sudo yum install -y yum-utils \
    device-mapper-persistent-data \
    lvm2

3. 添加源，这里使用了阿里云的源

$ sudo yum-config-manager \
    --add-repo \
https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

4. 安装docker社区版

$ sudo yum install docker-ce

5. 启动 Docker

$ sudo systemctl start docker

6. 测试

$ sudo docker run hello-world

7. 安装Docker-compose所需依赖

$ sudo yum install -y install python-pip

8. 安装Docker-compose

$pip install --upgrade --force-reinstall --no-cache-dir docker-compose