Publish Helm chart on release

.github/workflows/release.yml

@@ -0,0 +1,25 @@
+name: release
+
+on:
+  push:
+    tags: '*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: crazy-max/ghaction-docker-buildx@v1
+      - name: Publish multi-arch image
+        run: |
+          echo "${{ secrets.DOCKER_PASSWORD }}" | docker login --username "${{ secrets.DOCKER_USERNAME }}" --password-stdin
+          docker buildx build --platform "linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64" \
+            --output "type=image,push=true" \
+            --build-arg "REVISION=${GITHUB_SHA}" \
+            --tag "docker.io/stefanprodan/podinfo:${GITHUB_REF#refs/tags/}" \
+            --tag "docker.io/stefanprodan/podinfo:latest" \
+            --file Dockerfile .
+      - name: Publish helm chart
+        uses: ./.github/actions/helm-gh-pages
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}