chore(ci): package and push every pr change to the registry

.github/workflows/pull-request.yml

@@ -65,6 +65,75 @@ jobs:
           echo "==== Events ===="
           kubectl get events -A
 
+  publish-pr-chart:
+    if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
+    runs-on: ubuntu-latest
+    needs:
+      - helm-validation
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v5
+        with:
+          version: 'latest'
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v4
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Package and publish PR Helm chart
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          chart_version="$(helm show chart charts/opencloud | awk '/^version:/ {print $2}')"
+          pr_number="${{ github.event.pull_request.number }}"
+          branch_name="${{ github.event.pull_request.head.ref }}"
+          short_sha="${GITHUB_SHA::7}"
+
+          branch_slug="$(printf '%s' "$branch_name" \
+            | tr '[:upper:]' '[:lower:]' \
+            | sed -E 's/[^a-z0-9]+/-/g; s/^-+//; s/-+$//; s/-{2,}/-/g')"
+
+          if [[ -z "$branch_slug" ]]; then
+            branch_slug="pr"
+          fi
+
+          branch_slug="${branch_slug:0:40}"
+          publish_version="${chart_version}-pr-${branch_slug}.${pr_number}.${short_sha}"
+
+          echo "Publishing PR chart version ${publish_version}."
+
+          if helm pull oci://ghcr.io/tim-herbie/opencloud-helm/opencloud --version "$publish_version" >/dev/null 2>&1; then
+            echo "Chart ${publish_version} already exists in GHCR. Skipping versioned publish."
+          else
+            rm -f opencloud-*.tgz
+            helm package charts/opencloud --version "$publish_version"
+            helm push "opencloud-${publish_version}.tgz" oci://ghcr.io/tim-herbie/opencloud-helm
+
+            echo "Verifying published chart ${publish_version}."
+            rm -f "opencloud-${publish_version}.tgz"
+            helm pull oci://ghcr.io/tim-herbie/opencloud-helm/opencloud --version "$publish_version"
+          fi
+
+          {
+            echo "### PR chart published"
+            echo
+            echo "- Version: ${publish_version}"
+            echo "- Pull: helm pull oci://ghcr.io/tim-herbie/opencloud-helm/opencloud --version ${publish_version}"
+          } >> "$GITHUB_STEP_SUMMARY"
+
   e2e:
     runs-on: ubuntu-latest
     permissions: