Potential fix for code scanning alert no. 3: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: capcom6

.github/workflows/docker-image.yml

@@ -58,6 +58,9 @@ jobs:
   deploy:
     needs: docker
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      deployments: write
     environment: production
     concurrency: production
     env: