export/import

Description
Export a container’s filesystem as a tar archive
將容器導(dǎo)出為tar文件.

命令

• export

docker export <container id/name>  > latest.tar
docker export --output=" latest.tar"  <container id/name>

image.png

• import

Description
Import the contents from a tarball to create a filesystem image
將export導(dǎo)出tar包導(dǎo)入

# 從文件 URL 中導(dǎo)入
docker import [OPTIONS] file|URL|- [REPOSITORY[:TAG]] 
cat exampleimage.tgz | docker import  -  exampleimagelocal:new

image.png

• save

Description
Save one or more images to a tar archive (streamed to STDOUT by default)
將鏡像保存至tar文件中

 docker save busybox > busybox.tar
 docker save -o fedora-all.tar fedora

image.png

• load

Description
Load an image from a tar archive or STDIN
從文件或者標(biāo)準(zhǔn)輸入 載入 鏡像

docker load < alpine.tar.gz

image.png

• commit

Description
Create a new image from a container’s changes

容器最上層為R/W 保存修改后容器

docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
docker commit  alpine apline:v1

commit 提交容器為黑箱操作。建議使用Dockerfile,操作步驟明確可查。