add new push-node.sh that uses pre-compiled upstream releases

hack/release/push-node.sh

@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+# Copyright 2024 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# this script replaces hack/release/build/push-node.sh for Kubernetes v1.31+
+# usage: push-node.sh v1.32.0
+
+set -o errexit -o nounset -o pipefail
+
+REGISTRY="${REGISTRY:-gcr.io/k8s-staging-kind}"
+IMAGE_NAME="${IMAGE_NAME:-node}"
+
+# cd to the repo root
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." &> /dev/null && pwd -P)"
+cd "${REPO_ROOT}"
+
+VERSION="$1"
+
+# ensure we have up to date kind
+make build
+
+# ensure we have qemu setup so we can run cross-arch images
+# TODO: dedupe specifying this image?
+docker run --rm --privileged tonistiigi/binfmt:qemu-v7.0.0-28@sha256:66e11bea77a5ea9d6f0fe79b57cd2b189b5d15b93a2bdb925be22949232e4e55 --install all
+
+# NOTE: adding platforms is costly in terms of build time
+# we will consider expanding this in the future, for now the aim is to prove
+# multi-arch and enable developers working on commonly available hardware
+# Other users are free to build their own images on additional platforms using
+# their own time and resources. Please see our docs.
+ARCHES="${ARCHES:-amd64 arm64}"
+IFS=" " read -r -a __arches__ <<< "$ARCHES"
+
+set -x
+# build for each arch
+IMAGE="${REGISTRY}/${IMAGE_NAME}:${VERSION}"
+images=()
+for arch in "${__arches__[@]}"; do
+    image="${REGISTRY}/${IMAGE_NAME}-${arch}:${VERSION}"
+    "${REPO_ROOT}/bin/kind" build node-image --image="${image}" --arch="${arch}" "${VERSION}"
+    images+=("${image}")
+done
+
+# combine to manifest list tagged with kubernetes version
+# images must be pushed to be referenced by docker manifest
+# we push only after all builds have succeeded
+for image in "${images[@]}"; do
+    docker push "${image}"
+done
+docker manifest rm "${IMAGE}" || true
+docker manifest create "${IMAGE}" "${images[@]}"
+docker manifest push "${IMAGE}"