docker save

Export Docker images to archive. More information: https://docs.docker.com/engine/reference/commandline/save/.

docker save image:tag > path/to/file.tar

docker save --output path/to/file.tar image:tag

docker save --output path/to/file.tar image_name

docker save --output path/to/file.tar image_name:tag1 image_name:tag2 ...