This article aims to provide easily accessible commands you could use to understand underlying docker base images:

Why

To determine verified ways of building docker images more efficiently from restrictive docker images.

Instructions

Use the command below to retrieve the build history of a Docker image, formatting each step by who created it without truncating any lines.

docker history --format "{{.CreatedBy}}" <docker_image_name> --no-trunc | tac

Use the command below to export a running docker container as a .zip file:

docker export <docker_container_name/id> > latest.tar

References

• Generating a Dockerfile From an Image