release.yml

name: Release Charts

on:
  push:
    branches:
      - main
    paths:
      - "charts/**"

jobs:
  release:
    runs-on: ubuntu-latest

    permissions:
      contents: write
      packages: write
      id-token: write

    steps:
      - name: Checkout
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
        with:
          fetch-depth: 0

      - name: Configure Git
        run: |
          git config user.name "$GITHUB_ACTOR"
          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"

      - name: Add dependencies
        run: |
          helm repo add bitnami https://charts.bitnami.com/bitnami
          helm repo add backstage https://backstage.github.io/charts

      - name: Run chart-releaser
        uses: helm/chart-releaser-action@a917fd15b20e8b64b94d9158ad54cd6345335584 # v1.6.0
        with:
          config: cr.yaml
        env:
          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

      - name: Login to GitHub Container Registry
        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Install Cosign
        uses: sigstore/cosign-installer@1fc5bd396d372bee37d608f955b336615edf79c8 # v3.2.0

      - name: Install Oras
        uses: oras-project/setup-oras@ee7dbe1144cb00080a89497f937dae78f85fce29 # v1.1.0

      - name: Publish and Sign OCI Charts
        run: |
          for chart in `find .cr-release-packages -name '*.tgz' -print`; do
            helm push ${chart} oci://ghcr.io/${GITHUB_REPOSITORY} |& tee helm-push-output.log
            file_name=${chart##*/}
            chart_name=${file_name%-*}
            digest=$(awk -F "[, ]+" '/Digest/{print $NF}' < helm-push-output.log)
            cosign sign -y "ghcr.io/${GITHUB_REPOSITORY}/${chart_name}@${digest}"

            oras push "ghcr.io/${GITHUB_REPOSITORY}/${chart_name}:artifacthub.io" "./charts/${chart_name}/artifacthub-repo.yml:application/vnd.cncf.artifacthub.repository-metadata.layer.v1.yaml"
          done
        env:
          COSIGN_EXPERIMENTAL: 1