Dangling Image is an untagged image that isn't referenced by any container. This happens when image lost its association with any tagged image. An example of this case is building a new image with the same tag as an existing image. Dangling images have no tag and it's shown as `<none>:<none>` ``` REPOSITORY TAG IMAGE ID CREATED SIZE <none> <none> dacb7133d988 13 days ago 1.54GB ``` ### See also 1. [[How to list all dangling images in Docker?]] ### Reference 1. [Docker Website](https://docs.docker.com/engine/manage-resources/pruning/)