Build kubectl image #8
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| name: Build kubectl image | |
| on: | |
| schedule: | |
| # This will run the job daily at 00:13 UTC | |
| - cron: "13 0 * * *" | |
| workflow_dispatch: | |
| env: | |
| REGISTRY: ghcr.io | |
| REGCTL_VERSION: v0.5.7 | |
| SEMVER_VERSION: 3.4.0 | |
| defaults: | |
| run: | |
| shell: bash | |
| jobs: | |
| publish-docker: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v4 | |
| - name: Setup regctl | |
| uses: regclient/actions/regctl-installer@main | |
| with: | |
| release: ${{ env.REGCTL_VERSION }} | |
| install-dir: ${{ runner.temp }}/bin | |
| - name: Setup semver | |
| uses: sap/cs-actions/setup-semver@main | |
| with: | |
| version: ${{ env.SEMVER_VERSION }} | |
| install-directory: ${{ runner.temp }}/bin | |
| - name: Prepare repository name | |
| id: prepare-repository-name | |
| run: | | |
| repository=$REGISTRY/${{ github.repository }} | |
| echo "repository=${repository,,}" >> $GITHUB_OUTPUT | |
| - name: Log in to the registry | |
| run: | | |
| regctl registry login $REGISTRY --user ${{ github.actor }} --pass-stdin <<< ${{ github.token }} | |
| - name: Fetch latest k8s version | |
| id: latest-k8s-version | |
| run: | | |
| echo "version=$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)" >> $GITHUB_OUTPUT | |
| - name: Fetch latest docker build version | |
| id: latest-image-version | |
| run: | | |
| echo "version=$(regctl tag list ${{ steps.prepare-repository-name.outputs.repository }} | sort -V | tail -1)" >> $GITHUB_OUTPUT | |
| - name: Print both versions | |
| run: | | |
| echo "Latest k8s version: ${{ steps.latest-k8s-version.outputs.version }}" | |
| echo "Latest image version: ${{ steps.latest-image-version.outputs.version }}" | |
| - name: Compare versions | |
| id: compare-versions | |
| run: | | |
| if [ $(semver compare ${{ steps.latest-k8s-version.outputs.version }} ${{ steps.latest-image-version.outputs.version }}) -lt 0 ] | |
| then | |
| echo "Latest k8s version (${{ steps.latest-k8s-version.outputs.version }}) is lower than latest built image version (${{ steps.latest-image-version.outputs.version }}); skipping build ..." | |
| exit 0 | |
| elif [ $(semver compare ${{ steps.latest-k8s-version.outputs.version }} ${{ steps.latest-image-version.outputs.version }}) -gt 0 ] | |
| then | |
| echo "Latest k8s version (${{ steps.latest-k8s-version.outputs.version }}) is higher than latest built image version (${{ steps.latest-image-version.outputs.version }}); building ..." | |
| echo "build_image=true" >> $GITHUB_OUTPUT | |
| fi | |
| - name: Setup Docker Buildx | |
| if: steps.compare-versions.outputs.build_image == 'true' | |
| uses: docker/setup-buildx-action@v3 | |
| - name: Log in to the Container registry | |
| if: steps.compare-versions.outputs.build_image == 'true' | |
| uses: docker/login-action@v3 | |
| with: | |
| registry: ${{ env.REGISTRY }} | |
| username: ${{ github.actor }} | |
| password: ${{ github.token }} | |
| - name: Build and push docker image | |
| if: steps.compare-versions.outputs.build_image == 'true' | |
| uses: docker/build-push-action@v5 | |
| with: | |
| platforms: linux/amd64,linux/arm64 | |
| context: . | |
| file: ./Dockerfile | |
| tags: ${{ steps.prepare-repository-name.outputs.repository }}:${{ steps.latest-k8s-version.outputs.version }} | |
| cache-from: | | |
| type=gha,scope=sha-${{ github.sha }} | |
| type=gha,scope=${{ github.ref_name }} | |
| type=gha,scope=${{ github.base_ref || 'main' }} | |
| type=gha,scope=main | |
| cache-to: | | |
| type=gha,scope=sha-${{ github.sha }},mode=max | |
| type=gha,scope=${{ github.ref_name }},mode=max | |
| build-args: "KUBECTL_VERSION=${{ steps.latest-k8s-version.outputs.version }}" | |
| push: true |