chore(docs): update README with Helm chart installation instructions and deployment modes

Author: roderik

.github/workflows/qa.yml

@@ -270,16 +270,24 @@ jobs:
             ${{ steps.secret-scan.outcome == 'success' && 'success' || 'failure'
             }}
 
-      - name: Publish Helm charts to GitHub Pages
+      # Publish charts via Helm chart-releaser so gh-pages stays in sync with tagged releases
+      - name: Configure git author for chart releaser
         if: |
           github.event_name == 'push' &&
           startsWith(github.ref, 'refs/tags/')
-        uses: stefanprodan/helm-gh-pages@0ad2bb377311d61ac04ad9eb6f252fb68e207260 # v1.7.0
+        run: |
+          git config user.name "SettleMint Release Bot"
+          git config user.email "support@settlemint.com"
+
+      - name: Publish Helm charts with chart-releaser
+        if: |
+          github.event_name == 'push' &&
+          startsWith(github.ref, 'refs/tags/')
+        uses: helm/chart-releaser-action@v1.7.0
+        env:
+          CR_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
           charts_dir: charts
-          commit_username: SettleMint Release Bot
-          commit_email: support@settlemint.com
 
       # Check PR review status (PR and PR review events only)
       - name: Check PR review status

README.tpl

@@ -6,6 +6,19 @@ Generate node identities, configure consensus, and emit a Besu genesis.
 
 The helm chart to run this on Kubernetes / OpenShift can be found [here](./charts/network-bootstrapper/README.md)
 
+### Install from GitHub Pages
+
+The published chart repository lives at `https://settlemint.github.io/network-bootstrapper/`. Add it to Helm, sync indexes, and install the `network` chart:
+
+```bash
+helm repo add network-bootstrapper https://settlemint.github.io/network-bootstrapper/
+helm repo update
+
+helm upgrade --install besu-network network-bootstrapper/network \
+  --namespace besu \
+  --create-namespace
+```
+
 ### Deployment modes
 
 Two deployment paths are supported: fully auto-generated artefacts or supplying your own genesis/static peers while sourcing node keys from an external secret store such as Conjur.