feat: add workflow to release helm chart

.github/workflows/release.yml

@@ -0,0 +1,34 @@
+name: Release Charts
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'charts/**'
+
+jobs:
+  release:
+    # depending on default permission settings for your org (contents being read-only or read-write for workloads), you will have to add permissions
+    # see: https://docs.github.com/en/actions/security-guides/automatic-token-authentication#modifying-the-permissions-for-the-github_token
+    permissions:
+      contents: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "[email protected]"
+
+      - name: Install Helm
+        uses: azure/setup-helm@v3
+
+      - name: Run chart-releaser
+        uses: helm/[email protected]
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

charts/README.md

@@ -15,14 +15,12 @@ $ helm install -f examples/override.yaml sendgrid-stats-exporter ./
 
 ### Remote
 
-[helm-git](https://github.com/aslafy-z/helm-git) plugin is required.
-
 ```
-$ helm repo add sendgrid-stats-exporter 'git+https://github.com/chatwork/sendgrid-stats-exporter@charts?ref=0.0.8'
-$ helm install -f examples/override.yaml sendgrid-stats-exporter
+$ helm repo add sendgrid-stats-exporter 'https://chatwork.github.io/sendgrid-stats-exporter'
+$ helm install -f examples/override.yaml sendgrid-stats-exporter/sendgrid-stats-exporter
 ```
 
-### Test 
+### Test
 
 ```
 $ kubectl get svc
@@ -76,4 +74,4 @@ The following table lists the configurable parameters of the Sendgrid-stats-expo
 | `affinity` | Node/Pod affinities | `{}` |
 
 ---
-_Documentation generated by [Frigate](https://frigate.readthedocs.io)._
+_Documentation generated by [Frigate](https://frigate.readthedocs.io)._