I think network_mode: host is correct here

docker-compose-hub-server.yml

@@ -9,13 +9,12 @@ services:
       - es01
     image: lbry/hub:latest
     restart: always
-    ports:
-      - "50051:50051" # rpc port
     environment:
       #- TCP_PORT=50051 # should probably have these supported by the go server too
       #- TCP_HOST=0.0.0.0
       - ELASTIC_HOST=http://127.0.0.1
       - ELASTIC_PORT=9200
+    network_mode: host
   es01:
     image: docker.elastic.co/elasticsearch/elasticsearch:7.12.1
     container_name: es01
@@ -32,7 +31,4 @@ services:
         hard: -1
     volumes:
       - es01:/usr/share/elasticsearch/data
-    ports:
-      - "9200:9200"
-      - "9300:9300"
-      #- 127.0.0.1:9200:9200
+    network_mode: host

server/search.go

@@ -614,7 +614,11 @@ func (s *Server) Search(ctx context.Context, in *pb.SearchRequest) (*pb.Outputs,
 	if err != nil {
 		log.Fatalln(err)
 	}
-	searchIndices := make([]string, len(indices)-1)
+	var numIndices = 0
+	if len(indices) > 0 {
+		numIndices = len(indices) - 1
+	}
+	searchIndices := make([]string, numIndices)
 	j := 0
 	for i := 0; i < len(indices); i++ {
 		if indices[i] == "claims" {