# Docker镜像

拉取镜像：docker pull 镜像名:tag

例如：`docker pull ubuntu:20.04`

![](https://1799179144-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJUjw1o10kqD8jpqEfgoI%2Fuploads%2FtakehvBp0SwWYzpGNd0N%2Fimage.png?alt=media\&token=8c99e0cb-ba7c-400c-8c24-52329b4d1034)

![](https://1799179144-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJUjw1o10kqD8jpqEfgoI%2Fuploads%2FFjCqOjOKIOktWn6VFtRa%2Fimage.png?alt=media\&token=62472f79-66cc-40ae-8d44-901840b3aef9)

列出本地所有镜像：docker images

![](https://1799179144-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJUjw1o10kqD8jpqEfgoI%2Fuploads%2F8wE8CmaWHMhQvEkcChs9%2Fimage.png?alt=media\&token=f45f651c-5d48-421a-838a-f3b92d1289d2)

删除镜像：`docker rmi ubuntu:20.04`

将镜像ubuntu:20.04导出到本地文件ubuntu\_20\_04.tar中：`docker save -o ubuntu_20_04.tar ubuntu:20.04`

![](https://1799179144-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJUjw1o10kqD8jpqEfgoI%2Fuploads%2FcBx0OjOLwlASsS4IL6aO%2Fimage.png?alt=media\&token=fb16d0ea-332a-471f-9b27-e19a38614b80)

增加可读权限：`chmod +r ubuntu_20_04.tar`

![](https://1799179144-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJUjw1o10kqD8jpqEfgoI%2Fuploads%2FFIMAOo0mBYujQxJjK0hb%2Fimage.png?alt=media\&token=166959c6-9240-461d-a00d-9a24b13752ce)

将ubuntu\_*20\_*04.tar上传至自己的云服务器：`scp ubuntu_20_04.tar rootserver:`

![](https://1799179144-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJUjw1o10kqD8jpqEfgoI%2Fuploads%2FGPoVBAsaZJdwsHB1h8v1%2Fimage.png?alt=media\&token=47446dbb-d209-4903-a0f6-1fac6d41235c)

将镜像ubuntu:20.04从本地文件ubuntu\_20\_04.tar中加载出来：`docker load -i ubuntu_20_04.tar`