docker通過運行容器製作共享tar鏡像包

1. 鏡像構建：
   docker commit 【option】
   -a 指明作者
   -p 暫停容器再建立鏡像

   [root@vichost ~]# docker commit -p -a "vicliaoxz <*******@qq.com>" centos2
   sha256:ead743182b50ba021d5eee144aad229cbcf093f6796363b11e366f6117a62fab
   [root@vichost ~]# docker images
   REPOSITORY            TAG                 IMAGE ID            CREATED              SIZE
   <none>                <none>              ead743182b50        About a minute ago   302 MB
   [root@vichost ~]# docker run -it --name c-net-tools ead743182b50
   [root@ff3b674ffa51 /]# ifconfig
   eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
       inet 172.17.0.4  netmask 255.255.0.0  broadcast 0.0.0.0
       inet6 fe80::42:acff:fe11:4  prefixlen 64  scopeid 0x20<link>

2. 給鏡像添加標籤

   docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]
   [root@vichost ~]# docker tag ead743182b50（ID） vicdockerhub（用戶名）/centos（基礎鏡像）:net-tools（標籤）
   [root@vichost ~]# docker images
   REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
   vicdockerhub/centos   net-tools           ead743182b50        21 minutes ago      302 MB

3. 推送鏡像
   3.1.推送到docker-hub（需要註冊一個dockerhub賬號）

   [root@vichost ~]# docker login -u vicdockerhub 
   Password: 
   Login Succeeded
   [root@vichost ~]# docker push vicdockerhub/centos:net-tools 
   The push refers to a repository [docker.io/vicdockerhub/centos]

   3.2.上傳到私有倉庫：
   docker tag vicdockerhub/centos:net-tools myregistry.liaoxz.xin:5000/vicdockerhub/centos:net-tools

4. 將鏡像保存爲tar包
   docker ecport 導出爲一個容器

   Usage:  docker save [OPTIONS] IMAGE [IMAGE...]
   Options:
   -o, --output string   Write to a file, instead of STDOUT
   [root@vichost ~]# docker save vicdockerhub/centos:net-tools -o centos-net-tools.tar 
   [root@vichost ~]# ls
   centos-net-tools.tar

5. 外部tar包導入鏡像

docker load
docker load -i 指定鏡像tar包
[root@vichost ~]# docker load -i centos-net-tools.tar 
Loaded image: vicdockerhub/centos:net-tools
[root@vichost ~]# docker images
REPOSITORY                                       TAG                 IMAGE ID            CREATED             SIZE
myregistry.liaoxz.xin:5000/vicdockerhub/centos   net-tools           ead743182b50        51 minutes ago      302 MB
vicdockerhub/centos                              net-tools           ead743182b50        51 minutes ago      302 MB