docker save / load image

docker save

Estimated reading time: 1 minute

Description

Save one or more images to a tar archive (streamed to STDOUT by default)

Usage

docker save [OPTIONS] IMAGE [IMAGE...]

Options

Name, shorthandDefaultDescription
--output , -oWrite to a file, instead of STDOUT

Parent command

CommandDescription
dockerThe base command for the Docker CLI.

Extended description

Produces a tarred repository to the standard output stream. Contains all parent layers, and all tags + versions, or specified repo:tag, for each argument provided.

Examples

Create a backup that can then be used with docker load.

$ docker save busybox > busybox.tar

$ ls -sh busybox.tar

2.7M busybox.tar

$ docker save --output busybox.tar busybox

$ ls -sh busybox.tar

2.7M busybox.tar

$ docker save -o fedora-all.tar fedora

$ docker save -o fedora-latest.tar fedora:latest

Cherry-pick particular tags

You can even cherry-pick particular tags of an image repository.

$ docker save -o ubuntu.tar ubuntu:lucid ubuntu:saucy

docker load

Estimated reading time: 1 minute

Description

Load an image from a tar archive or STDIN

Usage

docker load [OPTIONS]

Options

Name, shorthandDefaultDescription
--input , -iRead from tar archive file, instead of STDIN
--quiet , -qSuppress the load output

Parent command

CommandDescription
dockerThe base command for the Docker CLI.

Extended description

Load an image or repository from a tar archive (even if compressed with gzip, bzip2, or xz) from a file or STDIN. It restores both images and tags.

Examples

$ docker image ls

REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE

$ docker load < busybox.tar.gz

Loaded image: busybox:latest
$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
busybox             latest              769b9341d937        7 weeks ago         2.489 MB

$ docker load --input fedora.tar

Loaded image: fedora:rawhide

Loaded image: fedora:20

$ docker images

REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
busybox             latest              769b9341d937        7 weeks ago         2.489 MB
fedora              rawhide             0d20aec6529d        7 weeks ago         387 MB
fedora              20                  58394af37342        7 weeks ago         385.5 MB
fedora              heisenbug           58394af37342        7 weeks ago         385.5 MB
fedora              latest              58394af37342        7 weeks ago         385.5 MB

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