update ci (prometheus-community#611)

* update ci

Signed-off-by: André Bauer <monotek23@gmail.com>

* set ct.yaml path

Signed-off-by: André Bauer <monotek23@gmail.com>

Author: monotek

.github/workflows/lint-test.yaml

@@ -8,23 +8,28 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
-
-      - name: Fetch history
-        run: git fetch --prune --unshallow
-
-      - name: Run chart-testing (lint)
-        id: lint
-        uses: helm/chart-testing-action@v1.0.0
         with:
-          command: lint
-          config: ct.yaml
-
+          fetch-depth: 0
+      - name: Set up Helm
+        uses: azure/setup-helm@v1
+        with:
+          version: v3.5.0
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+      - name: Set up chart-testing
+        uses: helm/chart-testing-action@v2.0.1
+      - name: Run chart-testing (list-changed)
+        id: list-changed
+        run: |
+          changed=$(ct list-changed --config ct.yaml)
+          if [[ -n "$changed" ]]; then
+            echo "::set-output name=changed::true"
+          fi
+      - name: Run chart-testing (lint)
+        run: ct lint --config ct.yaml
       - name: Create kind cluster
-        uses: helm/kind-action@v1.0.0
-        if: steps.lint.outputs.changed == 'true'
-
+        uses: helm/kind-action@v1.1.0
+        if: steps.list-changed.outputs.changed == 'true'
       - name: Run chart-testing (install)
-        uses: helm/chart-testing-action@v1.0.0
-        with:
-          command: install
-          config: ct.yaml
+        run: ct install --config ct.yaml