Hello!
Linux container and Windows host have different ip addresses. And, unfortunately, Docker Desktop for Windows can’t route traffic to Linux containers. (see https://docs.docker.com/docker-for-windows/networking/)
In the same time, we have "(c *Client) fetchFragmentNodes(indexName string, shard uint64) ([]fragmentNode, error)"
with http request to "/internal/fragment/nodes?shard=%d&index=%s " and as result "fragmentNodeURIs.Host" contains ip address of the lunix container and during the import this address is unreachable from windows host where a pilosa's client is trying to make import.