Update ruby 3.4.6 -> 3.4.7. Update gems. Add trivy scanning and ignore unfixable Debian CVEs. Ignore a test fixture key for Capybara

.github/workflows/ci.yml

@@ -41,6 +41,30 @@ jobs:
       - name: Scan for security vulnerabilities in JavaScript dependencies
         run: bin/importmap audit
 
+  scan_container:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v5
+
+      - name: Build Docker image
+        run: docker build -t clinch:${{ github.sha }} .
+
+      - name: Run Trivy vulnerability scanner
+        uses: aquasecurity/trivy-action@master
+        with:
+          image-ref: clinch:${{ github.sha }}
+          format: 'sarif'
+          output: 'trivy-results.sarif'
+          severity: 'CRITICAL,HIGH'
+
+      - name: Upload Trivy results to GitHub Security tab
+        uses: github/codeql-action/upload-sarif@v3
+        if: always()
+        with:
+          sarif_file: 'trivy-results.sarif'
+
   lint:
     runs-on: ubuntu-latest
     steps: