Remove <none> Tagged Docker Images

Question:

Accidently when we create Docker images without a tag, sometimes it’s not that much easy to remove that particular image. Even we used the -f flag, image removal will fail with a warning.

In this case, let’s assume that we have an image called foo-image without a tag.

$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
foo-image           <none>              ed69ee3e546a        2 weeks ago         133.7 MB

When we try to force remove it, it will give following error.

$ docker rmi -f ed69ee3e546a
Error response from daemon: conflict: unable to delete ed69ee3e546a (cannot be forced) - image has dependent child images

Answer:

First add a tag to that image, in this case it’s called bar.

$ docker tag ed69ee3e546a foo-image:bar

Remove the image as usual with new tag or you should be able to use the image id if you’re not sure.

$ docker rmi foo-image:bar
Untagged: foo-image:bar
Untagged: foo-image@sha256:0bb659eafa22cdb9f14bc05d17be97132842eb122eb8ff346ecafe7553f48f22

Notes:

• You may need root privileges to handle Docker daemon.

Resources:

Stack Overflow