Why an image gets overwritten on Docker Hub when doing a multiplatform build on GitHub

[andy5995]

When the amd64 job completes, the image gets pushed to Docker Hub. When the arm64 build completes successfully, it gets pushed to Docker Hub but the amd64 image disappears from Docker Hub.

My workflow

What am I doing wrong?

[andy5995]

What am I doing wrong?

I just got it working now after I switched to using platforms: linux/amd64,linux/arm64 instead of specifying them as a matrix, as shown in my workflow above and in the docker docs: platforms: ${{ matrix.platform }}. Is this a bug or did I miss something?

[andy5995]

I've encountered this problem again on another repo, while attempting again to use a matrix. I opened a ticket.