What Causes Dangling Images?

Dangling images usually occur in the following situations:

1.Rebuilding Images: When you rebuild a Docker image with the same tag, the old layers that are no longer used become dangling images.

2.Failed Builds: If a Docker build fails or is interrupted, it may leave behind dangling images.

3.Unreferenced Layers: Sometimes, images or layers that are no longer referenced by any container or image become dangling.

Why Should You Remove Them?

Dangling images consume disk space but don't serve any purpose since they are not tagged or referenced. It's generally a good idea to clean them up to free up space.

How to Remove Dangling Images

You can remove all dangling images with the following command:

docker image prune