镜像的导入和导出
export 和improt
[root@#localhost docker]# docker run -ti ubuntu:update /bin/bash
root@cbe3cb7799ed:/# ls
bin boot dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp update.txt usr var
[root@#localhost docker]#
[root@#localhost docker]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
cbe3cb7799ed ubuntu:update "/bin/bash" 47 seconds ago Exited (1) 6 seconds ago adoring_kare
812a997f614a ubuntu:14.04 "/bin/bash" 16 minutes ago Exited (0) 8 minutes ago zealous_euler
69304dea46c7 gitlab/gitlab-ce:latest "/assets/wrapper" 2 hours ago Exited (127) 53 minutes ago competent_minsky
67ba866e21b0 gitlab/gitlab-ce:latest "/assets/wrapper" 2 hours ago Exited (137) 2 hours ago hungry_hoover
2a3d08a0a2ff twang2218/gitlab-ce-zh:9.0.3 "/assets/wrapper" 2 hours ago Exited (137) 2 hours ago nervous_wozniak
6db49540be99 twang2218/gitlab-ce-zh:9.0.3 "/assets/wrapper" 2 hours ago Exited (255) 2 hours ago 22/tcp, 443/tcp, 0.0.0.0:3000->80/tcp romantic_elion
b08a6d6ed716 gitlab/gitlab-ce:latest "/assets/wrapper" 2 hours ago Exited (255) 2 hours ago 22/tcp, 443/tcp, 0.0.0.0:8080->80/tcp competent_brahmagupta
33fd0b1ebd27 gitlab/gitlab-ce:latest "/assets/wrapper" 3 hours ago Exited (127) 2 hours ago loving_brattain
6f53620a930c twang2218/gitlab-ce-zh:9.0.3 "/assets/wrapper" 3 hours ago Exited (127) 2 hours ago brave_galileo
88df78f77c4e ubuntu:14.04 "sleep 360" 4 days ago Exited (137) 4 days ago testcopy
81a879a36bd3 wordpress "docker-entrypoint..." 4 days ago Exited (0) 4 days ago wordpress
a57a3cc492b7 mysql "docker-entrypoint..." 4 days ago Exited (0) 4 days ago mysqlwp
# 将镜像做成的容器导出到文件
[root@#localhost docker]# docker export cbe3cb7799ed > update.tar
# 创建一个新静像从基于导出的容器文件
[root@#localhost /]# docker import - update < update.tar
sha256:fd00d520a43eb5dc6cca8717fe0ca04cfdc53b02cad2fb5b50d877b8e6d6c3bc
[root@#localhost /]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
update latest fd00d520a43e 13 seconds ago 165 MB
ubuntu update 317f10258460 11 minutes ago 188 MB
twang2218/gitlab-ce-zh 9.0.3 36172b5fefab 44 hours ago 1.19 GB
gitlab/gitlab-ce latest 5eff2e44957c 2 days ago 1.11 GB
mysql latest 9546ca122d3a 8 days ago 407 MB
wordpress latest 4ad41adc2794 2 weeks ago 401 MB
ubuntu 14.04 7c09e61e9035 5 weeks ago 188 MB
daocloud.io/library/nginx 1.7.1 e3e043d3ed2f 2 years ago 499 MB
save 和load
（像当与镜像的备份和恢复）
# update是一个已经存在的镜像
[root@#localhost /]# docker save -o update1.tar update
[root@#localhost /]# ls
bin boot dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp update1.tar update.tar usr var
[root@#localhost /]# du -sh update1.tar
166M update1.tar
# 删除update镜像
[root@#localhost /]# docker rmi update
Untagged: update:latest
Deleted: sha256:fd00d520a43eb5dc6cca8717fe0ca04cfdc53b02cad2fb5b50d877b8e6d6c3bc
Deleted: sha256:14cc8cd7b783152682835346e5fe90860a9feeb684866688692285319d4e97ad
[root@#localhost /]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu update 317f10258460 16 minutes ago 188 MB
twang2218/gitlab-ce-zh 9.0.3 36172b5fefab 44 hours ago 1.19 GB
gitlab/gitlab-ce latest 5eff2e44957c 2 days ago 1.11 GB
mysql latest 9546ca122d3a 8 days ago 407 MB
wordpress latest 4ad41adc2794 2 weeks ago 401 MB
ubuntu 14.04 7c09e61e9035 5 weeks ago 188 MB
daocloud.io/library/nginx 1.7.1 e3e043d3ed2f 2 years ago 499 MB
#导入镜像
[root@#localhost /]# docker load < update1.tar
14cc8cd7b783: Loading layer [==================================================>] 173.8 MB/173.8 MB
Loaded image: update:latest
[root@#localhost /]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
update latest fd00d520a43e 6 minutes ago 165 MB
ubuntu update 317f10258460 17 minutes ago 188 MB
twang2218/gitlab-ce-zh 9.0.3 36172b5fefab 44 hours ago 1.19 GB
gitlab/gitlab-ce latest 5eff2e44957c 2 days ago 1.11 GB
mysql latest 9546ca122d3a 8 days ago 407 MB
wordpress latest 4ad41adc2794 2 weeks ago 401 MB
ubuntu 14.04 7c09e61e9035 5 weeks ago 188 MB
daocloud.io/library/nginx 1.7.1 e3e043d3ed2f 2 years ago 499 MB
[root@#localhost /]#