Allow for cross-architecture ISO builds

[bcross]

What steps did you take and what happened:
I clicked the "Build ISO" button on the "Registration Endpoint" page.

What did you expect to happen:
I expected a bootable ISO to be created.

Anything else you would like to add:
An ISO is created, but the contents of the EFI/BOOT folder only contains BOOTAA64.EFI instead of bootx64.efi and is not bootable on a amd64 system. I assume this is because my Kubernetes cluster is running on arm64. It would be great to be able to generate bootable ISOs for amd64 on an arm64 Kubernetes cluster.

Environment:

• Elemental release version (use cat /etc/os-release): 1.3
• Rancher version: 2.8 (arm64)
• Kubernetes version (use kubectl version): v1.27.9+k3s1 (arm64)
• Cloud provider or hardware configuration: k3s in OCI VMs

[kkaempf]

Thanks for reporting this. I adapted the title and added it to our backlog.

[kkaempf]

See rancher/elemental-operator#600

[frelon]

FYI cross-arch ISO builds were implemented in rancher/elemental-operator#728

The issue tracking this feature for the ui is rancher/elemental-ui#181