release-publish.yml

name: release-publish

on:
  push:
    branches:
      - main

permissions:
  contents: write # Required for pushing the Helm charts to the gh-pages branch
  packages: write # Required for GHCR access
  id-token: write # Required for signing

jobs:
  release:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          fetch-depth: 0 # important for fetching all history to run comparison against

      - name: Fetch history
        run: git fetch --prune

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

      - name: Import PGP Private Key
        run: |
          echo "${{ secrets.PGP_PRIVATE_KEY }}" | gpg --dearmor --output /tmp/keyring.gpg
          echo "${{ secrets.PGP_KEY_PASSPHRASE }}" > /tmp/passphrase-file.txt

      - name: Set up Helm
        uses: azure/setup-helm@b7246b12e77f7134dc2d460a3d5bad15bbe29390 # v4.1.0
        with:
          version: v3.14.1

      - name: Run chart-releaser
        uses: helm/chart-releaser-action@a917fd15b20e8b64b94d9158ad54cd6345335584 # v1.6.0
        env:
          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
          CR_KEY: helm-charts+no-reply@cloudnative-pg.io
          CR_KEYRING: /tmp/keyring.gpg
          CR_PASSPHRASE_FILE: /tmp/passphrase-file.txt
          CR_SIGN: true
          CR_SKIP_EXISTING: true
          CR_GENERATE_RELEASE_NOTES: true
          CR_RELEASE_NAME_TEMPLATE: "{{ .Name }}-v{{ .Version }}"

      - name: Securely delete the PGP key and passphrase
        if: always()
        run: shred --remove=wipesync /tmp/keyring.gpg /tmp/passphrase-file.txt

      - name: Login to GitHub Container Registry
        uses: docker/login-action@e92390c5fb421da1463c202d546fed0ec5c39f20 # v3.1.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Install sigstore/cosign
        uses: sigstore/cosign-installer@e1523de7571e31dbe865fd2e80c5c7c23ae71eb4 # v3.4.0

      - name: Push charts to GHCR
        env:
          COSIGN_EXPERIMENTAL: 1
        # when filling gaps with previously released charts, cr would create
        # nothing in .cr-release-packages/, and the original globbing character
        # would be preserved, causing a non-zero exit. Set nullglob to fix this
        run: |
          shopt -s nullglob
          for pkg in .cr-release-packages/*; do
            if [ -z "${pkg:-}" ]; then
              break
            fi
            helm push "${pkg}" oci://ghcr.io/"${GITHUB_REPOSITORY_OWNER}"/charts
            file=${pkg##*/}
            name=${file%-*}
            version=${file%.*}
            version=${version##*-}
            cosign sign --yes ghcr.io/"${GITHUB_REPOSITORY_OWNER}"/charts/"${name}":"${version}"
          done