new image for kubectl

.github/workflows/docker-publish.yml → .github/workflows/docker-publish-jnlp.yml

@@ -1,4 +1,4 @@
-name: Docker
+name: Docker jnlp
 
 # This workflow uses actions that are not certified by GitHub.
 # They are provided by a third-party and are governed by

.github/workflows/docker-publish-kubectl.yml

@@ -0,0 +1,107 @@
+name: Docker - kubectl
+
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+on:
+  push:
+    branches: [ master ]
+    # Publish semver tags as releases.
+    tags: [ 'kubectl-v*.*.*' ]
+    paths: 
+    - 'kubectl/**'
+    - '.github/workflows/**'
+  pull_request:
+    branches: [ master ]
+    paths: 
+    - 'kubectl/**'
+
+env:
+  # Use docker.io for Docker Hub if empty
+  REGISTRY: ghcr.io
+  # IMAGE_PATH: jenkins-jnlp-slave
+  # github.repository as <account>/<repo>
+  # IMAGE_NAME: ${{ github.repository }}/jenkins-jnlp-slave
+
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        image: [kubectl]
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      # This is used to complete the identity challenge
+      # with sigstore/fulcio when running outside of PRs.
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      # Install the cosign tool except on PR
+      # https://github.com/sigstore/cosign-installer
+      - name: Install cosign
+        if: github.event_name != 'pull_request'
+        uses: sigstore/cosign-installer@v2
+        with:
+          cosign-release: 'v1.13.1'
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      # Workaround: https://github.com/docker/build-push-action/issues/461
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v2
+
+      # Login against a Docker registry except on PR
+      # https://github.com/docker/login-action
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/[email protected]
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/[email protected]
+        with:
+          images: ${{ env.REGISTRY }}/${{ github.repository }}/${{ matrix.image }}
+          tags: |
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
+            type=match,pattern=kubectl-(v.*),group=1
+            type=ref,event=branch
+            type=ref,event=pr
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/[email protected]
+        with:
+          file: ${{ matrix.image }}/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      # Sign the resulting Docker image digest except on PRs.
+      # This will only write to the public Rekor transparency log when the Docker
+      # repository is public to avoid leaking data.  If you would like to publish
+      # transparency data even for private images, pass --force to cosign below.
+      # https://github.com/sigstore/cosign
+      - name: Sign the published Docker image
+        if: ${{ github.event_name != 'pull_request' }}
+        env:
+          COSIGN_EXPERIMENTAL: "true"
+        # This step uses the identity token to provision an ephemeral certificate
+        # against the sigstore community Fulcio instance.
+        run: cosign sign ${{ env.REGISTRY }}/${{ github.repository }}/${{ matrix.image }}@${{ steps.build-and-push.outputs.digest }}

kubectl/Dockerfile

@@ -0,0 +1,15 @@
+FROM alpine:latest
+
+ARG KUBECTL_VERSION=1.23.13
+
+USER root
+
+RUN wget "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl" && \
+  echo "$(wget -O - "https://dl.k8s.io/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl.sha256")  kubectl" > kubectl.sha256 && \
+  sha256sum -cw kubectl.sha256 && \
+  install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl && \
+  rm kubectl
+
+USER nobody
+
+ENTRYPOINT ["/bin/sh", "-c"]