add urbit starters

docker/docker.go

@@ -248,7 +248,7 @@ func getCurrentContainerInfo(containerType string) (map[string]string, error) {
 	if !ok {
 		return nil, fmt.Errorf("%s is not a map", releaseChannel)
 	}
-	containerData, ok := channel[containerType].(map[string]interface{})
+	containerData, ok := channel[containerType].(map[string]string)
 	if !ok {
 		return nil, fmt.Errorf("%s data is not a map", containerType)
 	}