Remove Untagged Docker Images

List all images:

docker image ls

List images with a tag of <none>:

docker image ls | grep '^<none>'

The ^<none> will match <none> at the start of the line and if not matched the line will not be printed.

List the hashes of images where the tag is <none> (column number 3):

docker image ls | grep '^<none>' | awk '{print $3}'

Remove image by hash or tag:

docker image rm e894dddedf19

Remove all docker images without a tag:

docker image rm $(docker image ls | grep '^<none>' | awk '{print $3}')

...easy!

References

• Jim Hoskins this is mostly correct but in bash (a very common shell) variables will be expanded within double quotes ". As such awk "{print $3}" results in awk {print } which is not correct. See the page for details.