docker-export 0.3

Export docker image into tar file directly from registry API

docker-export

Export Docker Images (v2 manifests only) to a single .tar, without docker; Using Python and the registry's API.

Usages

Installation

docker-export is a Python3 software. You are advised to use it in a virtual environment to avoid installing software dependencies on your system.

python3 -m venv ./env  # creates a virtual python environment in ./env folder
./env/bin/pip install -U pip  # upgrade pip (package manager). recommended
./env/bin/pip install -U docker-export[all]  # install/upgrade docker-export inside virtualenv

# direct access to in-virtualenv docker-export binary, without shell-attachment
./env/bin/docker-export --help
# alias or link it for convenience
sudo ln -s $(pwd)/env/bin/docker-export /usr/local/bin/

# alternatively, attach virtualenv to shell
source env/bin/activate
docker-export --help
deactivate  # unloads virtualenv from shell

Command line

docker-export --platform linux/arm/v7 ghcr.io/kiwix/kiwix-tools:3.0.0 kiwix-tools.tar

Python module

import pathlib

from docker_export import Platform, Image, export

export(
    image=Image.parse("kiwix/kiwix-tools:3.3.0"),
    platform=Platform.auto(),
    to=pathlib.Path("kiwix-tools.tar"),
)

Using exported image

Exported images (tarball) are loaded into dockerd via:

docker load -i IMAGE.tar

# verify it's been properly added
docker images