ci: disable GHA cache on Gitea runners

Co-authored-by: multica-agent <github@multica.ai>

.github/workflows/bridge-proxy.yml

@@ -36,12 +36,15 @@ jobs:
         with:
           go-version-file: bridge-proxy/go.mod
           cache-dependency-path: bridge-proxy/go.mod
+          cache: ${{ github.server_url == 'https://github.com' }}
 
       - name: Test
         run: go test ./...
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
+        with:
+          cache-image: ${{ github.server_url == 'https://github.com' }}
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -75,6 +78,6 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+          cache-from: ${{ github.server_url == 'https://github.com' && 'type=gha' || '' }}
+          cache-to: ${{ github.server_url == 'https://github.com' && 'type=gha,mode=max' || '' }}
           platforms: linux/amd64,linux/arm64