ci: publish helm chart to ghcr (#1340)

Signed-off-by: David van der Spek <vanderspek.david@gmail.com>

.github/workflows/helm-publish.yml

@@ -11,19 +11,41 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: write
+  packages: write
+
 jobs:
   upload-helm-charts:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+
+      - uses: azure/setup-helm@v3
 
-      - uses: azure/setup-helm@v1
+      - name: Login to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Package helm charts
         run: for dir in ./*/; do helm package $dir; done
         working-directory: ${{ env.HELM_CHARTS_PATH }}
 
+      - name: Push Charts to GHCR
+        working-directory: ${{ env.HELM_CHARTS_PATH }}
+        run: |
+          for pkg in *.tgz; do
+            if [ -z "${pkg:-}" ]; then
+              break
+            fi
+            helm push "${pkg}" oci://ghcr.io/${GITHUB_REPOSITORY_OWNER}/charts
+          done
+
       - name: Rename helm chart archives
         run: for filename in *.tgz; do mv "$filename" "helm-chart-$filename"; done
         working-directory: ${{ env.HELM_CHARTS_PATH }}

charts/kserve-crd/README.md

@@ -0,0 +1,7 @@
+# kserve-crd
+
+## Using this chart
+
+```console
+helm install kserve-crd oci://ghcr.io/kserve/charts/kserve-crd --version 0.11.2
+```

charts/kserve-resources/README.md

@@ -0,0 +1,15 @@
+# kserve
+
+## Using this chart
+
+First install the `kserve-crd` chart
+
+```console
+helm install kserve-crd oci://ghcr.io/kserve/charts/kserve-crd --version 0.11.2
+```
+
+Then install this chart
+
+```console
+helm install kserve oci://ghcr.io/kserve/charts/kserve --version 0.11.2
+```