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Unable to delete docker image of a running container using -f option – CentOS

I tried to create a container using the following

docker run -it centos bash

and exited without killing it.

Now I’m trying to delete the centos image using its image ID.

docker rmi -f 0f3e07c0138f
Error response from daemon: conflict: unable to delete 0f3e07c0138f (cannot be forced) - image is being used by running container a9eab034a426

On docker documentation page, it says ” You cannot remove an image of a running container unless you use the -f option.” but still I’m unable to remove image using -f. What can be the explanation for this? Should there a correction in documentation?

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2

Answers


  1. 0

    a9eab034a426 container is using centos image. So, to remove centos, you need to stop and remove a9eab034a426 container. Run the following lines.

    docker stop a9eab034a426
docker rm a9eab034a426
docker rmi 0f3e07c0138f
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  2. 0

    See these results

    $ sudo docker rmi centos
Error response from daemon: conflict: unable to remove repository reference 
"centos" (must force) - container be8f69d76892 is using its referenced image 
0f3e07c0138f
$ sudo docker rmi -f 0f3e07c0138f
Error response from daemon: conflict: unable to delete 0f3e07c0138f (cannot be 
forced) - image is being used by running container be8f69d76892
$ sudo docker rmi -f centos
Untagged: centos:latest
Untagged: 
centos@sha256:f94c1d992c193b3dc09e297ffd54d8a4f1dc946c37cbeceb26d35ce1647f88d9

    docker rmi -f option only works on image name if container is running, even then it just untag the image but the image remains there with “none” repo and tag. see

    <none>   <none>       0f3e07c0138f        3 months ago        220MB

    And when you will run 

    sudo docker ps

    you will see that image id is there instead of the image name

    CONTAINER ID        IMAGE                                                
be8f69d76892        0f3e07c0138f

    I have removed other info in this docker ps command’s result.

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