Centos7 installs docker, docker-compose and sets domestic image acceleration

1. Uninstall the old version (if any)

$ 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. Install the required packages

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

3. Add domestic sources

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

4. Install the latest version of docker ce

$ sudo yum install docker-ce docker-ce-cli containerd.io

5. Add domestic mirror library

To find domestic images, take Alibaba Cloud as an example: log in to the Alibaba Cloud console, search for container image services, click

"Image Tool - Image Accelerator", find the image address corresponding to centos and how to modify it, and

write the image to /etc/docker/daemon.json (create this file if not present)

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["上图查到的镜像地址"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

6. Set the startup

sudo systemctl enable docker

7. View docker information

docker info

8. Install docker-compose (if required)

First go to https://github.com/docker/compose/releases to retrieve the version and download address to be installed

# 以1.23.1版本为例安装
curl -L https://github.com/docker/compose/releases/download/1.23.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
# 添加运行权限
chmod +x /usr/local/bin/docker-compose
# 查看版本，确定安装成功
docker-compose -v