Docker renames the image name and TAG operation

When using docker images, images with both REPOSITORY and TAG set to none may appear, as shown below:

At this point, we can rename the image

# docker tag IMAGEID (image id) REPOSITORY:TAG (warehouse: tag)

Additional knowledge: Docker image rename

The docker image name was accidentally written incorrectly, for example, you wanted to name it ubuntu1604-arm-qt, but wrote it as unbuntu1604-arm-qt. How to change it back?

Rename with docker tag

docker images find image_id

The image id found is efeb4214cfc4.

haojc@ubuntu:~/docker/ubuntu1604-arm-qt$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
sword2000/unbuntu1604-arm-qt 1.0 efeb4214cfc4 13 hours ago 7.05GB
hello-world latest fce289e99eb9 7 months ago 1.84kB

Rename with docker tag <image_id>

docker tag efeb4214cfc4 ubuntu1604-arm-qt

Then delete the original image name

docker rmi sword2000/unbuntu1604-arm-qt:1.0

haojc@ubuntu:~/docker/ubuntu1604-arm-qt$ docker rmi sword2000/ubuntu1604-arm-qt:1.0
Untagged: sword2000/unbuntu1604-arm-qt:1.0
haojc@ubuntu:~/docker/ubuntu1604-arm-qt$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
sword2000/ubuntu1604-arm-qt 1.0 efeb4214cfc4 13 hours ago 7.05GB
hello-world latest fce289e99eb9 7 months ago 1.84kB

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