How do I remove an image in Docker

Question

I have been running Docker using Vagrant under OS X 10.8.4 (Mountain Lion), and whenever I try to delete a saved image, I get an error:

$ docker rmi some-image-id
2013/07/15 hh:mm:ss unexpected JSON input

When I am using rmi help command it's showing, the proper syntax is docker rmi IMAGE [IMAGE...], and I'm not sure what to make of that.

How can I delete an image?

When I am running docker ps, no containers show up at all. Running docker images is showing four 4 base image and one 1 node image?

Can anyone help me with this query?

Thanks.

Answer 1

Here is what you can try. Use docker rmi node. That should work.

Seeing all created containers is as simple as 

docker ps -a.

To remove all existing containers (not images!) run 

docker rm $(docker ps -aq)

Answer 2

Hi,

The following are some of the ways to remove docker images/containers:

• Remove a single image.

$ docker rmi image_name:version/image-id

• Remove all images.

$ docker rmi $(docker images -q)