Debug: check Www-Authenticate header from registry

Need to see what token endpoint/service buildah is being directed to.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy.yaml

@@ -30,14 +30,8 @@ jobs:
 
           CREDS="${{ secrets.REGISTRY_USER }}:${{ secrets.REGISTRY_PASSWORD }}"
 
-          echo "=== debug: test v2 endpoint ==="
+          echo "=== debug: Www-Authenticate header ==="
-          curl -sk https://git.kimchi/v2/ || true
+          curl -sk -I https://git.kimchi/v2/ | grep -i www-authenticate || true
-          echo ""
-          echo "=== debug: test v2 auth ==="
-          curl -sk -u "$CREDS" https://git.kimchi/v2/ || true
-          echo ""
-          echo "=== debug: test token endpoint ==="
-          curl -sk -u "$CREDS" "https://git.kimchi/v2/token?scope=repository:tas/major_tom:push,pull&service=container_registry" || true
           echo ""
 
           echo "=== buildah push tag ==="