Create arm64 image for Tanzu flavour to support Podman > 5.5.2

[ThomasMinor]

We need to build and publish an arm64 image for the Tanzu flavour so that it can run correctly on Podman versions greater than 5.5.2. This is necessary to ensure compatibility with newer environments and platforms that use arm64 architectures and recent Podman releases.

Acceptance Criteria:

• Build pipeline for arm64 image for Tanzu flavour is created and tested.
• Image is published to the usual registry.
• Image runs successfully on Podman versions > 5.5.2.
• Documentation is updated to reflect arm64 support for Tanzu flavour.

Additional context:

• Current limitation affects Podman versions > 5.5.2 where x86 images do not run optimally or at all on arm64 architectures.
• Ensure build scripts and CI are updated accordingly.

[dploeger]

Does Tanzu already support arm for their vsphere login kubectl plugin?

That was the limitation for only having an x64 image for now.

[ThomasMinor]

That's right, there is only a preliminary support as far as i could see it. But I want to have an extended look at it just to be sure and thus I created a new Issue so I don't forget it.
The thing is, things are not getting better with podman & MacOS Tahoe.....