Add TFLint step to ci workflow (#4)

Author: saidsef

.github/workflows/ci.yaml

@@ -26,6 +26,28 @@ jobs:
     - name: Validate the configuration
       run: terraform validate
 
+  tflint:
+    name: tflint
+    runs-on: ubuntu-latest
+    needs: [validate]
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - uses: actions/cache@v3
+        name: Cache plugin dir
+        with:
+          path: ~/.tflint.d/plugins
+          key: ${{ runner.os }}-tflint
+      - uses: terraform-linters/setup-tflint@v2
+        name: Setup TFLint
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          tflint_version: latest
+      - name: Run TFLint
+        run: |
+          tflint --init
+          tflint -f compact
+
   tfsec:
     name: tfsec
     runs-on: ubuntu-latest
@@ -39,7 +61,7 @@ jobs:
   caller-identity-check:
     if: ${{ github.event_name == 'pull_request' }}
     name: Return the IAM user
-    needs: [validate, tfsec]
+    needs: [validate, tflint, tfsec]
     permissions:
       contents: read
       id-token: write