Docker入门教程：镜像导出导入

获取

docker pull gitlab/gitlab-ce #下载1.24GB 安装后2.95GB

输出为

[hyper@hyper-docker Desktop]$ sudo docker pull gitlab/gitlab-ce
Using default tag: latest
latest: Pulling from gitlab/gitlab-ce
3713021b0277: Pull complete 
e82b077a9ea5: Pull complete 
51dc1797133d: Pull complete 
afe8ed435db4: Pull complete 
9b6fd0763a2c: Pull complete 
f7050bdc3785: Pull complete 
4dd138a01ba8: Pull complete 
108a1208d494: Pull complete 
b2920d53e0f9: Pull complete 
Digest: sha256:e331d46760fece3845bb4022598ecea804927cc0ff51c2f4cbed053af0e88af3
Status: Downloaded newer image for gitlab/gitlab-ce:latest
docker.io/gitlab/gitlab-ce:latest

查看镜像列表

[hyper@hyper-docker Desktop]$ sudo docker images
[sudo] password for hyper: 
REPOSITORY         TAG       IMAGE ID       CREATED       SIZE
gitlab/gitlab-ce   latest    e2e712bc83b9   8 days ago    2.95GB
nginx              latest    900dca2a61f5   7 weeks ago   188MB

导出

将gitlab-ce镜像导出

sudo docker save -o /home/hyper/gitlab-ce.zip gitlab/gitlab-ce:latest

根据镜像大小耗时不同。

导入

将gitlab-ce导入

docker load -i gitlab-ce.zip

说明

• 若是只想备份images，使用save、load即可
• 若是在启动容器后，容器内容有变化，需要备份，则使用export、import