Use docker driver for buildx to inherit host network/hosts

.forgejo/workflows/deploy.yaml

@@ -97,10 +97,13 @@ jobs:
             http = true
             insecure = true
           EOF
+          # Add hosts entry for git.uncloud.vpn token endpoint resolution
+          echo "10.100.0.2 git.uncloud.vpn" >> /etc/hosts
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
         with:
+          driver: docker
           driver-opts: |
             network=host
           config: /tmp/buildkit/buildkitd.toml