镜像的导入和导出
export 和improt
[root@#localhost docker]# docker run -ti ubuntu:update /bin/bashroot@cbe3cb7799ed:/# lsbin 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 -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMEScbe3cb7799ed 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 /]# lsbin 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 /]#