Solution to the problem that the image name is none after Docker load

Recently, I found that after using the docker load -i command to compress the image package, the image name and label are all none. I need to rename the image every time, which is very troublesome.

The root of this problem is that the image compression package is improperly packaged.

For example, if you use the image ID to package, the unpacked image will have no name.

docker save -o redis.tar 7864316753

Therefore, it is recommended to use the image name for packaging, for example:

docker save -o redis.tar redis:5.0.2

The image packaged in this way will have the image name after decompression.

In addition, here is the method for renaming the image:

docker tag [image id] [new image name]:[new image tag]

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