摘要：的版本的版本分為社區(qū)版和企業(yè)版，想了解更多可以去官網(wǎng)查看其中分為和版本為季度發(fā)布版本，例如發(fā)布周期為一個季度為月度發(fā)布版本，例如發(fā)布周期為一個月安裝前先在官網(wǎng)查看支持的平臺，不同系統(tǒng)下的安裝方法也都可以在官網(wǎng)找到，這里以在下安裝為例下

Docker的版本分為Docker-ce社區(qū)版和Docker-ee企業(yè)版，想了解更多可以去官網(wǎng)查看
其中Docker-ce分為stable和edge版本

stable為季度發(fā)布版本，例如v17.03 v17.06發(fā)布周期為一個季度

edge為月度發(fā)布版本，例如v17.01 v17.02發(fā)布周期為一個月

安裝前先在官網(wǎng)查看Docker支持的平臺，不同系統(tǒng)下的安裝方法也都可以在官網(wǎng)找到，這里以在CentOS7下安裝為例

OS requirements
To install Docker CE, you need a maintained version of CentOS 7. Archived versions aren’t supported or tested.
The centos-extras repository must be enabled. This repository is enabled by default, but if you have disabled it, you need to re-enable it.
The overlay2 storage driver is recommended.

查看系統(tǒng)需求提示需要一個處于維護(hù)版本的CentOS7即可

Uninstall old versions
Older versions of Docker were called docker or docker-engine. If these are installed, uninstall them, along with associated dependencies.

如果之前安裝過Docker，根據(jù)提示先清除老版本的Docker

[root@centos7 ~]# yum remove docker 
           docker-client 
           docker-client-latest 
           docker-common 
           docker-latest 
           docker-latest-logrotate 
           docker-logrotate 
           docker-selinux 
           docker-engine-selinux 
           docker-engine

推薦的方式，便于安裝和升級

需要安裝yum-config-manager來更方便的管理yum倉庫，yum-config-manager在yum-utils包中，所以先安裝yum-utils

[root@centos7 ~]# yum install -y yum-utils device-mapper-persistent-data lvm2

安裝完后添加Docker-ce的官方源

[root@centos7 ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

開啟edge版本后，在選擇指定版本安裝時就能看到edge版本了

[root@centos7 ~]# yum-config-manager --enable docker-ce-edge

查看倉庫列表檢查是否添加成功

[root@centos7 ~]# yum repolist

[root@centos7 ~]# yum install docker-ce

先列出Docker倉庫中可用的版本再選擇安裝，@代表已安裝的軟件包，返回的列表取決于啟用了哪些倉庫
其中EL是RedHatEnterpriseLinux的簡寫，其中el5/6/7的軟件包用于Red Hat 5/6/7.x, CentOS 5/6/7.x, and CloudLinux 5/6/7.下的安裝

[root@centos7 ~]# yum list docker-ce --showduplicates | sort -r
已加載插件：fastestmirror
可安裝的軟件包
Loading mirror speeds from cached hostfile
docker-ce.x86_64            18.06.0.ce-3.el7                    docker-ce-stable
docker-ce.x86_64            18.03.1.ce-1.el7.centos             docker-ce-stable
docker-ce.x86_64            18.03.0.ce-1.el7.centos             docker-ce-stable
docker-ce.x86_64            17.12.1.ce-1.el7.centos             docker-ce-stable
docker-ce.x86_64            17.12.0.ce-1.el7.centos             docker-ce-stable
docker-ce.x86_64            17.09.1.ce-1.el7.centos             docker-ce-stable
docker-ce.x86_64            17.09.0.ce-1.el7.centos             docker-ce-stable
docker-ce.x86_64            17.06.2.ce-1.el7.centos             docker-ce-stable
docker-ce.x86_64            17.06.1.ce-1.el7.centos             docker-ce-stable
docker-ce.x86_64            17.06.0.ce-1.el7.centos             docker-ce-stable
docker-ce.x86_64            17.03.2.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

執(zhí)行命令yum install docker-ce-安裝

[root@centos7 ~]# yum install docker-ce-18.03.1.ce-1.el7.centos

[root@centos7 ~]# systemctl start docker

[root@centos7 ~]# docker run hello-world
Unable to find image "hello-world:latest" locally
latest: Pulling from library/hello-world
9db2ca6ccae0: Pull complete 
Digest: sha256:4b8ff392a12ed9ea17784bd3c9a8b1fa3299cac44aca35a85c90c5e3c7afacdc
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/engine/userguide/

包方式安裝需要下載.rpm文件進(jìn)行安裝，但當(dāng)需要更新docker的時候也必須下載安裝包來安裝，下載地址

[root@centos7 ~]# yum install docker-ce-18.03.1.ce-1.el7.centos.x86_64.rpm

[root@centos7 ~]# systemctl start docker

[root@centos7 ~]# docker run hello-world

[root@centos7 ~]# yum remove docker-ce
[root@centos7 ~]# rm -rf /var/lib/docker