Fix docker image scan action

Author: pvannierop

.github/workflows/scheduled-snyk-docker.yaml

@@ -36,6 +36,7 @@ jobs:
     permissions:
       contents: read
       security-events: write
+      packages: read
     strategy:
       matrix:
         image: ${{ fromJson(needs.prepare-matrix.outputs.images ) }}
@@ -63,11 +64,11 @@ jobs:
             --policy-path=.snyk
             --exclude-app-vulns
             --org=radar-base
-            --sarif-file-output=${{ matrix.image.name }}.sarif
+            --sarif-file-output=snyk.sarif
 
       # Detected vulnerabilities will appear on Github in Security->Code_scanning_alerts tab
       - name: Upload result to GitHub Code Scanning
         uses: github/codeql-action/upload-sarif@v3
         with:
-          sarif_file: ${{ matrix.image.name }}.sarif
+          sarif_file: snyk.sarif
           category: ${{ matrix.image.name }}