使用官方安装脚本自动安装 （仅适用于公网环境）

curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun

手动安装

CentOS 7 (使用yum进行安装)

# step 1: 安装必要的一些系统工具
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
# Step 2: 添加软件源信息
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# Step 3: 更新并安装 Docker-CE
sudo yum makecache fast
sudo yum -y install docker-ce
# Step 4: 开启Docker服务
sudo service docker start

 sudo yum remove docker                   docker-client                   docker-client-latest                   docker-common                   docker-latest                   docker-latest-logrotate                  docker-logrotate
sudo yum-config-manager     --add-repo     http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sudo yum install docker-ce docker-ce-cli containerd.io
mkdir /etc/docker
vi /etc/docker/daemon.json
sudo tee /etc/docker/daemon.json <<-'EOF'
{
    "oom-score-adjust": -1000,
    "log-driver": "json-file",
    "log-opts": {
    "max-size": "100m",
    "max-file": "3"
    },
    "max-concurrent-downloads": 20,
    "max-concurrent-uploads": 20,
    "registry-mirrors": ["https://7bezldxe.mirror.aliyuncs.com"],
    "storage-driver": "overlay2",
    "storage-opts": [
    "overlay2.override_kernel_check=true"
    ]
}
EOF
cat /etc/docker/daemon.json 
{
    "oom-score-adjust": -1000,
    "log-driver": "json-file",
    "log-opts": {
    "max-size": "100m",
    "max-file": "3"
    },
    "max-concurrent-downloads": 20,
    "max-concurrent-uploads": 20,
    "registry-mirrors": ["https://7bezldxe.mirror.aliyuncs.com"],
    "storage-driver": "overlay2",
    "storage-opts": [
    "overlay2.override_kernel_check=true"
    ]
}
sudo systemctl restart docker


注意：其他注意事项在下面的注释中
# 官方软件源默认启用了最新的软件，您可以通过编辑软件源的方式获取各个版本的软件包。例如官方并没有将测试版本的软件源置为可用，你可以通过以下方式开启。同理可以开启各种测试版本等。
# vim /etc/yum.repos.d/docker-ce.repo
#   将 [docker-ce-test] 下方的 enabled=0 修改为 enabled=1
#
# 安装指定版本的Docker-CE:
# Step 1: 查找Docker-CE的版本:
# yum list docker-ce.x86_64 --showduplicates | sort -r
#   Loading mirror speeds from cached hostfile
#   Loaded plugins: branch, fastestmirror, langpacks
#   docker-ce.x86_64            17.03.1.ce-1.el7.centos            docker-ce-stable
#   docker-ce.x86_64            17.03.1.ce-1.el7.centos            @docker-ce-stable
#   docker-ce.x86_64            17.03.0.ce-1.el7.centos            docker-ce-stable
#   Available Packages
# Step2 : 安装指定版本的Docker-CE: (VERSION 例如上面的 17.03.0.ce.1-1.el7.centos)
# sudo yum -y install docker-ce-[VERSION]
# 注意：在某些版本之后，docker-ce安装出现了其他依赖包，如果安装失败的话请关注错误信息。例如 docker-ce 17.03 之后，需要先安装 docker-ce-selinux。
# yum list docker-ce-selinux- --showduplicates | sort -r
# sudo yum -y install docker-ce-selinux-[VERSION]



wget https://github.com/docker/compose/releases/download/1.29.2/docker-compose-Linux-x86_64
cp docker-compose-Linux-x86_64 docker-compose
chown +x docker-compose

cp docker-compose /usr/local/bin/
ln -s /usr/bin/docker-compose /usr/local/bin/docker-compose 
chmod +x /usr/local/bin/docker-compose 

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 makecache fast
sudo yum -y install docker-ce-20.10.9-3.el7
mkdir  -p /etc/docker/
vim /etc/docker/daemon.json
systemctl daemon-reload
sudo systemctl restart docker
wget https://github.com/docker/compose/releases/download/1.29.2/docker-compose-Linux-x86_64
cp docker-compose-Linux-x86_64 docker-compose
chmod +x docker-compose
cp docker-compose /usr/local/bin/
ln -s /usr/local/bin/docker-compose  /usr/bin/docker-compose