Introduction
In this challenge, you are tasked with navigating the sea of Docker images to help the treasure island natives reclaim their storage space on their pirate ship. The natives have discovered that numerous unused and obsolete images are hogging their precious disk space and need your help to remove them efficiently.
Removing Unused Docker Images
Tasks
- Identify and list all dangling Docker images on the system.
- Remove all dangling Docker images to free up disk space.
Example
You'll need to use the command to list the dangling images and then remove them.
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest a8758716bb6a 3 months ago 187MB
jenkins/jenkins latest ca7cca8fa4b0 8 months ago 466MB
...
The setup has created some dangling images that should appear in the list. If no dangling images are shown, try running the setup commands again.
Removing Specific Docker Images
Tasks
- List all Docker images present on the system.
- Remove a specific Docker image with the tag "nginx:latest".
Example
Check the nginx image is removed.
labex:project/ $ docker images | grep nginx || echo "nginx image not exists"
nginx image not exists
Summary
In this challenge, you will practice efficiently managing Docker images by identifying and removing unused and specific images. This exercise will help you become adept at cleaning up Docker images, thereby optimizing storage space on the system. Upon completion, you will gain a comprehensive understanding of managing Docker images and contributing to maintaining a tidy and organized development environment.
