add trivy container scanning in ci

.github/workflows/ci.yaml

@@ -50,12 +50,28 @@ jobs:
     name: 'Built test Docker image'
     runs-on: ubuntu-latest
     permissions:
+      actions: read
       contents: read
+      security-events: write
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+
       - name: Build Docker image
         uses: docker/build-push-action@v4
         with:
           context: .
+          tags: 'ci/hdm:${{ github.sha }}'
           push: false
+
+      - name: Run Trivy vulnerability scanner
+        uses: aquasecurity/trivy-action@master
+        with:
+          image-ref: 'ci/hdm:${{ github.sha }}'
+          format: 'sarif'
+          output: 'trivy-results.sarif'
+
+      - name: Upload Trivy scan results to GitHub Security tab
+        uses: github/codeql-action/upload-sarif@v2
+        with:
+          sarif_file: 'trivy-results.sarif'