add image scanning on pull_request

Signed-off-by: zhzhuang-zju <m17799853869@163.com>

.github/workflows/ci-image-scanning-on-pull-request.yaml

@@ -0,0 +1,19 @@
+name: image-scanning
+on:
+  pull_request:
+jobs:
+  use-trivy-to-scan-image:
+    name: image scannning
+    # prevent job running from forked repository
+    if: ${{ github.repository == 'karmada-io/karmada' }}
+    runs-on: ubuntu-22.04
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v3
+      - name: install Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: 1.20.11
+      - name: Image scan
+        run: |
+          hack/vuln-scan-local.sh false