Docker Clear System Data - iDocs - Information. Organized.

1. Clear the Build Cache

When you build images, Docker keeps layers cached to speed up future builds. To clear just that cache:

docker builder prune

To remove all build cache (even from unused builders):

docker builder prune -a

You’ll be prompted for confirmation — add -f to skip it:

docker builder prune -a -f

This removes:

Run:

docker system prune

For a more aggressive cleanup (includes unused images and volumes):

docker system prune -a --volumes

Be careful — this deletes everything not actively in use by a running container.

If you want a total reset:

docker stop $(docker ps -aq)
docker rm $(docker ps -aq)
docker rmi -f $(docker images -q)
docker volume rm $(docker volume ls -q)

See what’s taking space:

docker system df

docker system prune -a --volumes -f
docker builder prune -a -f