CentOS 7 安装 docker

>>> yum install -y yum-utils device-mapper-persistent-data lvm2
>>> yum install deltarpm -y
>>> yum install docker-ce docker-ce-cli containerd.io
>>> systemctl start docker

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2020-07-13更新

重启后发现没有自动启动docker

>>> docker ps
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
# 允许开机自启
>>> systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

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2022-09-08更新

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

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
No package docker-ce available.
No package docker-ce-cli available.
No package containerd.io available.
Error: Nothing to do

# 添加yum源
>>> yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
### 更新索引
>>> yum makecache fast
### 安装
>>> yum install docker-ce docker-ce-cli containerd.io

安装docker-compose

>>> yum install docker-compose-plugin