When we switched to go-runner for building the apiserver,
controller-manager, and scheduler server components, we no longer
reference the individual architectures in the image names, specifically
in the 'FROM' directive of the server image Dockerfiles.
As a result, server images for non-amd64 images copy in the go-runner
amd64 binary instead of the go-runner that matches that architecture.
This commit explicitly sets the '--platform=linux/${arch}' to ensure
we're pulling the correct go-runner arch from the manifest list.
Before:
FROM ${base_image}
After:
FROM --platform=linux/${arch} ${base_image}
Signed-off-by: Stephen Augustus <saugustus@vmware.com>