More trivy configuration.

.gitea/workflows/release.yml

@@ -43,7 +43,7 @@ jobs:
       - name: Run Trivy vulnerability scanner
         uses: aquasecurity/trivy-action@master
         with:
-          image-ref: 'cs-git.ddnss.de/arbeitsschutz-ulm/website:master'
+          image-ref: 'https://cs-git.ddnss.de/arbeitsschutz-ulm/website:master'
           format: 'table'
           exit-code: '1'
           ignore-unfixed: true
@@ -52,3 +52,4 @@ jobs:
         env:
           TRIVY_USERNAME: ${{ env.USER }}
           TRIVY_PASSWORD: ${{ env.PASS }}
+          TRIVY_BRANCH: 'master'