Adjust publicUrl to volume server only.
Adjust publicUrl to volume server only.

k85169336/seaweedfs,chrislusf/seaweedfs,chrislusf/seaweedfs,chrislusf/seaweedfs,chrislusf/seaweedfs,hxiaodon/seaweedfs,k85169336/seaweedfs,hxiaodon/seaweedfs