add terraform linter (#170)

.github/workflows/reuseable-tf-lint.yaml

@@ -0,0 +1,46 @@
+name: tf-lint
+
+on:
+  workflow_call:
+    secrets:
+      token:
+        required: true
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  tflint:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+
+    steps:
+    - uses: actions/checkout@v3
+      name: Checkout source code
+
+    - uses: actions/cache@v3
+      name: Cache plugin dir
+      with:
+        path: ~/.tflint.d/plugins
+        key: ${{ matrix.os }}-tflint-${{ hashFiles('.tflint.hcl') }}
+
+    - uses: terraform-linters/setup-tflint@v3
+      name: Setup TFLint
+      with:
+        tflint_version: v0.44.1
+
+    - name: Show version
+      run: tflint --version
+
+    - name: Init TFLint
+      run: tflint --init
+      env:
+        # https://github.com/terraform-linters/tflint/blob/master/docs/user-guide/plugins.md#avoiding-rate-limiting
+        GITHUB_TOKEN: ${{ secrets.token  }}
+
+    - name: Run TFLint
+      run: tflint -f compact

README.md

@@ -23,6 +23,7 @@ Used for deduplicate the CI/CD Boilerplate-Code. Like [Workflow](https://docs.gi
 | ```reuseable-sphinx.yaml```                   | Build and Publish a [Sphinx](https://www.sphinx-doc.org/en/master) Documentation as [Github Page](https://pages.github.com/).                                    |
 | ```reuseable-stale.yaml```                    | Mark old or inactive issues and close then, used [actions/stale](https://github.com/actions/stale) for this work.                                                |
 | ```reuseable-trivy.yaml```                    | Scan the GitRepo by using [aquasecurity/trivy-action](https://github.com/aquasecurity/trivy-action).                                                             |
+| ```reuseable-tf-lint.yaml```                  | Use [terraform-linters/setup-tflint](https://github.com/terraform-linters/setup-tflint) for Lint terraform sources.                                              |
 <!--td-workflows-end-->
 
 ## Probot Config