Add Chart Releaser action (#44)

.ct-release.yaml

@@ -0,0 +1,3 @@
+chart-dirs: charts
+target-branch: master
+all: true

.github/workflows/release.yaml

@@ -0,0 +1,39 @@
+name: Release
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Configure Git
+        run: |
+          git config user.name "apparitor"
+          git config user.email "[email protected]"
+
+      - name: Run chart-releaser
+        uses: helm/[email protected]
+        env:
+          CR_TOKEN: "${{ secrets.CI_TOKEN }}"
+        with:
+          charts_dir: charts
+          charts_repo_url: https://helm.pomerium.io
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Run chart-testing
+        id: lint
+        uses: helm/[email protected]
+        with:
+          command: lint
+          config: .ct-release.yaml