为什么两个docker映像具有相同的映像ID和相同的标签，但摘要不同？

Question

当我docker pull hello-world时，得到的图像带有f9dfddf63636d84ef479d645ab5885156ae030f611a56f3a7ac7f2fdd86d7e4e的摘要

$ docker pull hello-world
Using default tag: latest
latest: Pulling from library/hello-world
Digest: sha256:f9dfddf63636d84ef479d645ab5885156ae030f611a56f3a7ac7f2fdd86d7e4e
Status: Image is up to date for hello-world:latest
docker.io/library/hello-world:latest

我使用的是Mac，但是当我docker inspect hello-world:latest时，我看到os / arch是linux/amd64

    ...
    "Architecture": "amd64",
    "Os": "linux",
    ...

所以我去了https://hub.docker.com/_/hello-world/?tab=tags，发现很奇怪，最新的Linux / amd64问候世界在https://hub.docker.com/layers/hello-world/library/hello-world/latest/images/sha256-92c7f9c92844bbbb5d0a101b22f7c2a7949e40f8ea90c8b3bc396879d95e899a?context=explore，摘要为92c7f9c92844bbbb5d0a101b22f7c2a7949e40f8ea90c8b3bc396879d95e899a

所以我也拉下了这张图片

$ docker pull hello-world@sha256:92c7f9c92844bbbb5d0a101b22f7c2a7949e40f8ea90c8b3bc396879d95e899a
sha256:92c7f9c92844bbbb5d0a101b22f7c2a7949e40f8ea90c8b3bc396879d95e899a: Pulling from library/hello-world
Digest: sha256:92c7f9c92844bbbb5d0a101b22f7c2a7949e40f8ea90c8b3bc396879d95e899a
Status: Downloaded newer image for hello-world@sha256:92c7f9c92844bbbb5d0a101b22f7c2a7949e40f8ea90c8b3bc396879d95e899a
docker.io/library/hello-world@sha256:92c7f9c92844bbbb5d0a101b22f7c2a7949e40f8ea90c8b3bc396879d95e899a

令人惊讶的是，我最终得到了两个具有相同标签，相同图像ID，但摘要不同的图像。

$ docker image ls --digests
REPOSITORY                    TAG                 DIGEST                                                                    IMAGE ID            CREATED             SIZE
hello-world                   latest              sha256:92c7f9c92844bbbb5d0a101b22f7c2a7949e40f8ea90c8b3bc396879d95e899a   fce289e99eb9        15 months ago       1.84kB
hello-world                   latest              sha256:f9dfddf63636d84ef479d645ab5885156ae030f611a56f3a7ac7f2fdd86d7e4e   fce289e99eb9        15 months ago       1.84kB

这两个图像是同一张吗？如果我希望整个团队保持一致，该如何唯一地解决图像问题？