Delete all untagged Docker images

0 
 $ docker images -q -f dangling=true | xargs --no-run-if-empty --delim='\n' docker rmi

June 15, 2018, 1:12 a.m. — penguincoder

Explanation

It does not return a failing exit code if there are no images removed. It should always succeed unless there was an actual problem removing a Docker image.

Limitations

This only works in the GNU version of xargs (thanks to the --no-run-if-empty), BSD does not have an equivalent that I know about.

Related one-liners

-1

Delete all untagged Docker images 

 $ docker rmi $(docker images -f "dangling=true" -q)

April 27, 2018, 2:50 p.m. — stefanobaghino

Explanation

docker images outputs all images currently available. By specifying -f "dangling=true" we restrict the list to "dangling" images (i.e. untagged). By specifying the -q option we use quiet mode, which limits the output to the images hash, which is the directly fed into docker rmi, which removes the images with the corresponding hashes.