Multi arch build/test + push

[ro0NL]

Contributing guidelines

• I've read the contributing guidelines and wholeheartedly agree

I've found a bug, and:

• The documentation does not mention anything about my problem
• There are no open or closed issues that are related to my problem

Description

We want to build+push multi arch image (AMD+ARM) under a single tag.

We build+test separate on AMD and ARM runner. This builds and caches fine.

Last we want to push, but this fails because it runs on either on AMD or ARM runnner. When pushing from AMD runner, the previous ARM build cache is not leveraged, and vice versa.

Expected behaviour

Push the multi arch build. It doesnt matter how long it takes.

Actual behaviour

ERROR: failed to solve: process "/dev/.buildkit_qemu_emulator 

Repository URL

https://github.com/etrias-nl/php

Workflow run URL

https://github.com/etrias-nl/php/actions/runs/13325226013/job/37216999043

YAML workflow

https://github.com/etrias-nl/php/blob/main/.github/workflows/docker-build.yaml

Workflow logs

No response

BuildKit logs

Additional info

No response