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}` ([#94552](https://github.com/kubernetes/kubernetes/pull/94552), [@justaugustus](https://github.com/justaugustus)) [SIG Release]

### Container Images

All container images are available as manifest lists and support the described
architectures. It is also possible to pull a specific architecture directly by
adding the "-$ARCH" suffix  to the container image name.

name | architectures
---- | -------------

        * `kubernetes.io/hostname`
        * `kubernetes.io/instance-type`
        * `kubernetes.io/os`
        * `kubernetes.io/arch`
        * `beta.kubernetes.io/instance-type`
        * `beta.kubernetes.io/os`
        * `beta.kubernetes.io/arch`
        * `failure-domain.kubernetes.io/zone`
        * `failure-domain.kubernetes.io/region`
        * `failure-domain.beta.kubernetes.io/zone`

- kubelet
  - The `beta.kubernetes.io/os` and `beta.kubernetes.io/arch` labels, deprecated since v1.14, are targeted for removal in v1.18.
  - The `--containerized` flag, deprecated since v1.14, will be removed in a future release.

- The deprecated mondo `kubernetes-test` tarball is no longer built. Users running Kubernetes e2e tests should use the `kubernetes-test-portable` and `kubernetes-test-{OS}-{ARCH}` tarballs instead. ([#83093](https://github.com/kubernetes/kubernetes/pull/83093), [@ixdy](https://github.com/ixdy))

### Scheduling

* The Kubelet's --enable-custom-metrics flag is now marked deprecated. ([#54154](https://github.com/kubernetes/kubernetes/pull/54154), [@mtaufen](https://github.com/mtaufen))
* Use multi-arch busybox image for e2e ([#54034](https://github.com/kubernetes/kubernetes/pull/54034), [@dixudx](https://github.com/dixudx))

  - the `--containerized` flag was deprecated in 1.14 and has been removed ([#80043](https://github.com/kubernetes/kubernetes/pull/80043), [@dims](https://github.com/dims))
  - the `beta.kubernetes.io/os` and `beta.kubernetes.io/arch` labels, deprecated since v1.14, are targeted for removal in v1.18.
  - cAdvisor json endpoints have been deprecated since 1.15. ([#78504](https://github.com/kubernetes/kubernetes/pull/78504), [@dashpole](https://github.com/dashpole))

pkg syscall (netbsd-arm64-cgo), const RUSAGE_SELF ideal-int
pkg syscall (netbsd-arm64-cgo), const S_ARCH1 = 65536
pkg syscall (netbsd-arm64-cgo), const S_ARCH1 ideal-int
pkg syscall (netbsd-arm64-cgo), const S_ARCH2 = 131072
pkg syscall (netbsd-arm64-cgo), const S_ARCH2 ideal-int
pkg syscall (netbsd-arm64-cgo), const S_BLKSIZE = 512
pkg syscall (netbsd-arm64-cgo), const S_BLKSIZE ideal-int

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