Container disk usage management in Docker - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to list disk usage of Docker images.

Docker

docker system [1]

Drag options to blanks, or click blank then click option'

Adf

Bimages

Cprune

Dps

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'prune' which deletes unused data instead of showing usage.

Using 'images' which lists images but does not show disk usage.

Using 'ps' which lists containers but not disk usage.

The docker system df command shows disk usage of Docker images, containers, and volumes.

2fill in blank

medium

Complete the command to remove all stopped containers and unused images.

Docker

docker system [1]

Drag options to blanks, or click blank then click option'

Adf

Brm

Cprune

Dclean

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'df' which only shows disk usage.

Using 'rm' which removes specific containers or images but not system-wide.

Using 'clean' which is not a valid Docker command.

The docker system prune command removes all stopped containers, unused networks, dangling images, and build cache.

3fill in blank

hard

Fix the error in the command to remove dangling images.

Docker

docker image rm $(docker images -f "dangling=[1]" -q)

Drag options to blanks, or click blank then click option'

Atrue

Bfalse

Cnone

Dall

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'false' which selects non-dangling images.

Using 'none' or 'all' which are invalid filter values.

To remove dangling images, the filter dangling=true is used to select images not tagged and unused.

4fill in blank

hard

Fill both blanks to create a command that removes all unused volumes and networks.

Docker

docker volume [1] && docker network [2]

Drag options to blanks, or click blank then click option'

Aprune

Brm

Clist

Dinspect

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'rm' which removes specific named resources, not all unused ones.

Using 'list' or 'inspect' which only show information.

The docker volume prune and docker network prune commands remove all unused volumes and networks respectively.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps container IDs to their size if size is greater than 100MB.

Docker

sizes = [1]: [2] for c in containers if c['SizeRootFs'] [3] 100*1024*1024

Drag options to blanks, or click blank then click option'

Ac['Id']

Bc['SizeRootFs']

C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' which selects smaller containers.

Using wrong keys or values that do not exist.

This comprehension creates a dictionary with container IDs as keys and their sizes as values, filtering only those larger than 100MB.