What this snippet does
With -a every image not used by a running container goes, including ones you meant to keep.
Expected output
Deleted Images: untagged: myapp:staging
Why practise typing this
Typing cli: images code builds muscle memory for the symbols and indentation Docker uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Docker practice
- Tagging an imageCLI: Images · beginner
- Pushing to a registryCLI: Images · intermediate
- Pulling a specific tagCLI: Images · beginner
- Sorting images by sizeCLI: Images · beginner
- Exporting an image to a tarballCLI: Images · advanced
- Reclaiming disk spaceCLI: Images · intermediate