ci: use correct image tag for trivy scan and change cron job to Monda…

…y morning

.github/workflows/trivy.yml

@@ -12,7 +12,7 @@ on:
     # The branches below must be a subset of the branches above
     branches: [ "main" ]
   schedule:
-    - cron: '25 16 * * 5'
+    - cron: '00 02 * * 1'
 
 permissions:
   contents: read
@@ -29,14 +29,10 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v3
 
-      - name: Build an image from Dockerfile
-        run: |
-          docker build -t docker.io/my-organization/my-app:${{ github.sha }} .
-
       - name: Run Trivy vulnerability scanner
         uses: aquasecurity/trivy-action@7b7aa264d83dc58691451798b4d117d53d21edfe
         with:
-          image-ref: 'docker.io/my-organization/my-app:${{ github.sha }}'
+          image-ref: 'docker.io/universalresolver/driver-did-dns:latest'
           format: 'template'
           template: '@/contrib/sarif.tpl'
           output: 'trivy-results.sarif'