Docker入門第二章

安裝Docker

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1.首先使用uname -r命令查看一下內核發行版本號（個人是3.10.0-1160.e17.x86_64）

2.而後使用cat /etc/os-release命令查看一下系統的版本（個人是Centos7）

3.安裝以前請先執行下面命令卸載掉舊的docker

sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

4.安裝須要的安裝包

sudo yum install -y yum-utils

5.設置鏡像的倉庫

sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo   #默認是設置國外的鏡像地址
sudo yum-config-manager \
    --add-repo \
    http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo   #推薦使用阿里雲國內的鏡像地址

6.更新yum軟件包索引

sudo yum makecache fast

7.安裝docker相關的    docker-ce是社區版本  ee是企業版本

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

8.啓動docker

sudo systemctl start docker

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 9.查看docker是否安裝成功

docker version

10.運行docker hello world程序

sudo docker run hello-world

11.查看一下下載的這個hello-world鏡像

docker images

卸載Docker

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1.卸載依賴

sudo yum remove docker-ce docker-ce-cli containerd.io

2.刪除資源

sudo rm -rf /var/lib/docker
 sudo rm -rf /var/lib/containerd