add github action and scripts to facilitate build process

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: Dapper CI on PR
+run-name: CI on ${{ github.event_name }}
+
+on:
+  pull_request:
+  push:
+    branches:
+      - '*'
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    container:
+      image: rancher/dapper:v0.6.0
+    permissions:
+      contents: read
+    steps:
+      - name: Fix the not-a-git-repository issue
+        run: |
+          apk -U add git
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+          
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: build with Dapper
+        run: dapper ci
+
+      - name: LS the bin
+        run: ls -lR output/bin

.github/workflows/release.yml

@@ -0,0 +1,64 @@
+name: Release When Tagged
+run-name: Release ${{ github.ref_name }}
+
+on:
+  push:
+    tags: '*'
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    container:
+      image: rancher/dapper:v0.6.0
+    permissions:
+      contents: read
+    steps:
+      - name: Check For Alpha / RC in Release
+        if: contains(github.ref_name, 'rc')  || contains(github.ref_name, 'alpha')
+        uses: actions/github-script@v7
+        with:
+          script: |
+            core.setFailed('No RCs or Alphas are released in this repo. Skipping release...') 
+
+      - name: Fix the not-a-git-repository issue
+        run: |
+          apk -U add git
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: build with Dapper
+        run: dapper ci
+
+      - name: Archive production artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: kubernetes-build
+          path: output/bin
+          if-no-files-found: error
+          overwrite: true
+
+  create-release:
+    runs-on: ubuntu-latest
+    needs:
+      - validate
+    permissions:
+      contents: write # needed for creating the GH release
+    env:
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Download assets
+        uses: actions/download-artifact@v4
+
+      - name: Create GH Release
+        run: |
+            gh release create ${{ github.ref_name }} --verify-tag --generate-notes kubernetes-build/*

.gitignore

@@ -22,7 +22,8 @@ __*
 # This is where the result of the go build goes
 /output*/
 /_output*/
-/_output
+/_output/
+Dockerfile.dapper?*
 
 # Emacs save files
 *~

Dockerfile.dapper

@@ -0,0 +1,19 @@
+FROM registry.suse.com/bci/golang:1.22
+
+ARG DAPPER_HOST_ARCH
+ARG DEBIAN_FRONTEND=noninteractive
+ENV HOST_ARCH=${DAPPER_HOST_ARCH} ARCH=${DAPPER_HOST_ARCH}
+
+RUN zypper install -y -f docker rsync awk
+COPY --from=docker/buildx-bin:0.10.2 /buildx /usr/libexec/docker/cli-plugins/docker-buildx
+
+ENV DAPPER_SOURCE /go/src/github.com/rancher/kubernetes/
+ENV DAPPER_RUN_ARGS --privileged -v /var/lib/docker
+ENV DAPPER_OUTPUT ./output/bin
+ENV DAPPER_DOCKER_SOCKET true
+ENV DAPPER_ENV TAG REPO GOOS CROSS DRONE_TAG
+ENV HOME ${DAPPER_SOURCE}
+WORKDIR ${DAPPER_SOURCE}
+ENTRYPOINT ["./scripts/entry"]
+CMD ["ci"]
+

scripts/build

@@ -0,0 +1,39 @@
+#!/bin/bash
+set -e
+
+source $(dirname $0)/version
+
+cd $(dirname $0)/..
+
+OS_ARCH_LINUX="arm64 amd64"
+KUBE_BUILD_PLATFORMS="linux/arm64 linux/amd64"
+K8S_BASE="k8s.io/component-base"
+
+mkdir -p output/bin
+if [ -n "$VERSION" ]; then
+    TAG=$VERSION
+fi
+
+buildDate=$(date -u '+%Y-%m-%dT%H:%M:%SZ')
+GOLDFLAGS="
+    -X ${K8S_BASE}/version.gitVersion=${TAG}
+    -X ${K8S_BASE}/version.gitCommit=${COMMIT}
+    -X ${K8S_BASE}/version.gitTreeState=${GIT_TREE_STATE}
+    -X ${K8S_BASE}/version.buildDate=${buildDate}
+"
+
+build/run.sh make kubelet KUBE_BUILD_PLATFORMS="${KUBE_BUILD_PLATFORMS}"
+
+for ARCH in ${OS_ARCH_LINUX}; do
+        mv _output/dockerized/bin/linux/$ARCH/kubelet .
+        if [ $ARCH = "amd64" ]; then
+            ./kubelet --version
+        fi
+        tar -cvzf output/bin/kubelet-$TAG-$ARCH.tar.gz kubelet && rm kubelet
+done
+
+sha256sum output/bin/* > output/bin/sha256sum.txt
+
+rm -rf _output/
+
+echo Built ${TAG}

scripts/ci

@@ -0,0 +1,7 @@
+#!/bin/bash
+set -e
+
+cd $(dirname $0)
+
+./build
+

scripts/entry

@@ -0,0 +1,11 @@
+#!/bin/bash
+set -e
+
+mkdir -p bin dist
+if [ -e ./scripts/$1 ]; then
+    ./scripts/"$@"
+else
+    exec "$@"
+fi
+
+chown -R $DAPPER_UID:$DAPPER_GID .

scripts/version

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+if [ -n "$(git status --porcelain --untracked-files=no)" ]; then
+    DIRTY="-dirty"
+fi
+
+COMMIT=$(git rev-parse HEAD)
+GIT_TAG=${DRONE_TAG:-$(git tag -l --contains HEAD | head -n 1)}
+
+if [[ -z "$DIRTY" && -n "$GIT_TAG" ]]; then
+    VERSION=$GIT_TAG
+    GIT_TREE_STATE=clean
+else
+    VERSION="${COMMIT}${DIRTY}"
+    GIT_TREE_STATE=dirty
+fi
+
+if [ -z "$ARCH" ]; then
+    ARCH=amd64
+fi