Docker is a containerization and manager tool. Docker is a kind of isolated space where an application runs by using system resources. An alternative to Docker is Podman.
Extract image locally
To extract a container’s image locally (e.g. using Docker) the following can be used:
docker export $CONTAINER_NAME > output.tar
Alternatively, and using the
$IMAGE_ID we can do:
docker save $IMAGE_ID$ > output.tar