add pull image to trivy_image_scan.yml

.gitea/workflows/trivy_image_scan.yml

@@ -22,6 +22,17 @@ jobs:
     runs-on: ubuntu-latest
     container: aquasec/trivy:latest
     steps:
+      - name: Login to Gitea
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.registry_gitea }}
+          username: ${{ env.user }}
+          password: ${{ secrets.DOCKER_PULL_TOKEN }}
+
+      - name: Pull image
+        run: |
+          docker pull ${{ env.registry_gitea }}/${{ env.user }}/${{ env.image_name_gitea }}:${{ env.image_tag }}
+
       - name: Scan image with trivy
         run: |
           trivy image \