docker-build.yml

# Build and push Image
name: Build and push Image

on:
  push:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Check Version Format in Tag
        if: startsWith(github.ref, 'refs/tags/v')
        uses: nowsprinting/check-version-format-action@v4.0.2
        id: check-version
        with:
          prefix: 'v'

      - name: Set tag
        id: set-tag
        run: |
          SHORT_SHA=$(git rev-parse --short HEAD)
          TAG1="dev"
          TAG2="commit-$SHORT_SHA"

          if [[ "${{ steps.check-version.outputs.is_valid }}" == 'true' ]]; then
            TAG1="latest"
            TAG2="${{ steps.check-version.outputs.full_without_prefix }}"
          fi

          echo "TAG1=$TAG1" >> $GITHUB_ENV
          echo "TAG2=$TAG2" >> $GITHUB_ENV

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            mtr.devops.telekom.de/caas/py-kube-downscaler
            ghcr.io/caas-team/py-kube-downscaler
          tags: |
            ${{ env.TAG1 }}
            ${{ env.TAG2 }}

      - name: Install Cosign
        uses: sigstore/cosign-installer@main
        with:
          cosign-release: 'v2.2.0'

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to MTR
        uses: docker/login-action@v3
        with:
          registry: mtr.devops.telekom.de
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v5
        id: build-push
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}

      - name: Sign Push
        run: |
          cosign sign --key env://COSIGN_KEY --tlog-upload=false ghcr.io/caas-team/py-kube-downscaler@${{ steps.build-push.outputs.digest }}
          cosign sign --key env://COSIGN_KEY --tlog-upload=false mtr.devops.telekom.de/caas/py-kube-downscaler@${{ steps.build-push.outputs.digest }}
        env:
          COSIGN_KEY: ${{ secrets.COSIGN_KEY }}

  call-e2e:
    needs: build
    uses: ./.github/workflows/end2end.yml
    secrets: inherit