release.yaml

name: Release

on:
  push:
    tags:
      - 'csa-*'

jobs:
  validate-tag:
    name: Validate tag
    runs-on: ubuntu-latest

    steps:
      - name: Validate tag
        run: |
          if ! [[ "$GITHUB_REF_NAME" =~ ^csa-[0-9]+.[0-9]+.[0-9]+$ ]]; then
            echo "Tag does not match expected pattern - got $GITHUB_REF_NAME"
            exit 1
          fi

  publish-docker-image:
    name: Publish Docker image
    runs-on: ubuntu-latest
    needs: validate-tag

    steps:
      - name: Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: expediagroup/container-startup-autoscaler
          tags: |
            type=match,pattern=csa-(.*),group=1

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

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

      - name: Docker Hub login
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_PASSWORD }}

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

  publish-helm-chart:
    name: Publish Helm chart
    runs-on: ubuntu-latest
    needs: publish-docker-image

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Install Helm
        uses: azure/setup-helm@v3
        with:
          version: v3.13.1

      - name: Install chart-releaser
        uses: helm/chart-releaser-action@v1.5.0
        with:
          install_only: true

      - name: Run chart-releaser
        env:
          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
          CR_RELEASE_NAME_TEMPLATE: "chart-{{ .Version }}"
        run: |
          owner=$(cut -d '/' -f 1 <<< "$GITHUB_REPOSITORY")
          repo=$(cut -d '/' -f 2 <<< "$GITHUB_REPOSITORY")

          git config user.name "$GITHUB_ACTOR"
          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"

          rm -rf .cr-release-packages
          rm -rf .cr-index
          mkdir -p .cr-release-packages
          mkdir -p .cr-index
          
          cr package charts/container-startup-autoscaler
          
          # https://github.com/helm/chart-releaser#create-github-releases-from-helm-chart-packages
          cr upload -o "$owner" -r "$repo" -c "$(git rev-parse HEAD)" --skip-existing \
                    --release-notes-file=releasenotes.md --make-release-latest=false
          
          # https://github.com/helm/chart-releaser#create-the-repository-index-from-github-releases
          cr index -o "$owner" -r "$repo" --push