Support building of arm64 images by Kyma modules

[Sawthis]

Description

Currently, our image builder supports a limited set of architectures, excluding arm64. This enhancement aims to extend the image builder to support multi-architecture builds, specifically adding support for the arm64 architecture. This is critical for catering to GPU-intensive workloads on the Kyma Runtime and ensuring broader industry standard compliance.

Reasons

• Industry Standard Compliance: Native arm64 binaries are an industry standard. Adding support for arm64 will make our product more competitive and interoperable with other systems.
• Large Enterprise Requirements: This capability is crucial for SAP PSLE Large Enterprise Customers who require arm64 support.

Acceptance Criteria

• Every GitHub release contain multi-arch images including arm64
• Every multi-arch image is sign by SIgnify
• Warden is validating properly multi-arch images
• BDBA is scanning properly multi-arch images
• Submission pipeline(modulectl) supports multi-arch Kyma modules images
• Lifecycle Manager supports multi-arch Kyma modules images

Required tasks

1. Evaluate Kaniko and other solutions for multi-platform builds #12675 - Evaluate Kaniko and other solutions for multi-platform builds #12675 (comment)

2. Implement Multi-Arch Build Support

• Ensure that the BDBA is able to scan multi-architecture images. - Evaluate Kaniko and other solutions for multi-platform builds #12675 (comment)
• Implement multi-arch builds support with use of docker buildx in the pipeline #12815
• Implement multi-arch builds support with use of docker buildx in the client #12829
• Implement signing of the manifest-list.json instead of one image #12823
• Update the Docker Images Technical Guidelines #12830
• Image syncer should expect that amd64 + arm64 architectures are avaliable #12825
• Testing strategy for image-builder #11238

3. Verify Multi-Platform Image Build, Sign and Sync

• Verify that the multi-architecture images are correctly built.
• Verify that the multi-architecture images are correctly signed and verified by the warden.
• Verify that the image syncer fully supports multi-platform images.

4. Verify if the Submission pipeline(modulectl) and Lifecycle Manager works as expected with multi-platform images.

• Modulectl supports multi-platform images modulectl#204
• KLM supports multi-platform images lifecycle-manager#2337

5. Verify with the front runner team(s) if the building and submission to the channel works correctly for Kyma module build as multi-arch(amd64 + arm64).

6. All Kyma modules are built as multi-platform images.

• Inform external teams about the requirement of building arm64 images. @zhoujing2022
• Inform All Kyma modules teams how to migrate to the multi-arch builds.
• Verify if all Kyma modules are built as multi-arch images.

Attachments

• Kyma Issue #18770

[Sawthis]

https://github.com/kyma-project/test-infra/blob/main/cmd/image-syncer/README.md#overview