Introduction
Sometimes you need to see which Docker images are saved on your computer. Listing local images helps you find images you can use to create containers or clean up space.
When you want to check if an image is already downloaded before running a container
When you need to find the image ID to remove or tag an image
When you want to see all versions of an image you have locally
When you want to verify that your image build was successful and saved
When you want to clean up unused images to free disk space