Push oci chart to ghcr

.github/workflows/release.yml

@@ -7,6 +7,8 @@ jobs:
     if: github.ref == 'refs/heads/main'
     permissions:
       contents: write
+      packages: write
+
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -31,4 +33,22 @@ jobs:
       - name: Run chart-releaser
         uses: helm/chart-releaser-action@v1.7.0
         env:
-          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+
+      # see https://github.com/helm/chart-releaser/issues/183
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Push charts to GHCR
+        run: |
+          shopt -s nullglob
+          for pkg in .cr-release-packages/*; do
+            if [ -z "${pkg:-}" ]; then
+              break
+            fi
+            helm push "${pkg}" "oci://ghcr.io/${GITHUB_REPOSITORY_OWNER}/charts"
+          done