docker通过运行容器制作共享tar镜像包

Posted 2020-10-31

镜像构建：
docker commit 【option】
-a 指明作者
-p 暂停容器再建立镜像

[[email protected] ~]# docker commit -p -a "vicliaoxz <[email protected]>" centos2
sha256:ead743182b50ba021d5eee144aad229cbcf093f6796363b11e366f6117a62fab
[[email protected] ~]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED              SIZE
<none>                <none>              ead743182b50        About a minute ago   302 MB
[[email protected] ~]# docker run -it --name c-net-tools ead743182b50
[[email protected] /]# 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>

给镜像添加标签

docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]
[[email protected] ~]# docker tag ead743182b50（ID） vicdockerhub（用户名）/centos（基础镜像）:net-tools（标签）
[[email protected] ~]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
vicdockerhub/centos   net-tools           ead743182b50        21 minutes ago      302 MB

推送镜像
3.1.推送到docker-hub（需要注册一个dockerhub账号）

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

3.2.上传到私有仓库：
docker tag vicdockerhub/centos:net-tools myregistry.liaoxz.xin:5000/vicdockerhub/centos:net-tools

4. 将镜像保存为tar包
   docker ecport 导出为一个容器

   
   Usage:  docker save [OPTIONS] IMAGE [IMAGE...]
   Options:
   -o, --output string   Write to a file, instead of STDOUT

[[email protected] ~]# docker save vicdockerhub/centos:net-tools -o centos-net-tools.tar
[[email protected] ~]# ls
centos-net-tools.tar

5. 外部tar包导入镜像
docker load
docker load -i 指定镜像tar包

[[email protected] ~]# docker load -i centos-net-tools.tar 
Loaded image: vicdockerhub/centos:net-tools
[[email protected] ~]# 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