Docker

Space Usage [001]

docker system df

Save docker image [002]

# pull the image
docker pull ubuntu

# save the image to a file
docker save -o ubuntu_image.docker ubuntu

# load the image from file
docker load ubuntu_image.docker

Change VHD location [003]

Docker | Settings | Advanced | Change VHD Location

Note: The selected directory should be empty. Docker will move the image

Start bash from running container [004]

docker exec [OPTIONS] CONTAINER COMMAND [ARG…] [flags]

e.g., docker exec -it oracle /bin/bash

-i - Interactive -t - Pusedo TTY oracle - Container name /bin/bash - Command to be executed

Commit

Usage: docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]

Create a new image from a container’s changes

Options:

-a, --author string
	Author (e.g., “John Hannibal Smith <hannibal@a-team.com>”)
-c, --change list
	Apply Dockerfile instruction to the created image
-m, --message string
	Commit message
-p, --pause	Pause container during commit (default true)

Check these links

https://www.digitalocean.com/community/tutorials/how-to-remove-docker-images-containers-and-volumes https://stackoverflow.com/questions/17665283/how-does-one-remove-an-image-in-docker https://store.docker.com/profiles/kiranm516/content/sub-e2395a92-3d01-49bd-b79d-7ec6713c0113

[001]

https://stackoverflow.com/questions/26753087/docker-how-to-analyze-a-containers-disk-usage

[002]

https://serverfault.com/questions/701248/downloading-docker-image-for-transfer-to-non-internet-connected-machine

[003]

https://stackoverflow.com/questions/42369522/docker-wont-change-vhd-location?rq=1

[004]

https://blog.codeship.com/using-docker-commit-to-create-and-change-an-image/