fix: load environment variables and add elasticsearch_index to Settings class

Docker/src/server.py

@@ -1,6 +1,8 @@
 import logging
 import os
 from concurrent import futures
+from dotenv import load_dotenv
+load_dotenv()
 
 import brunix_pb2
 import brunix_pb2_grpc

src/config.py

@@ -15,6 +15,7 @@ class Settings(BaseSettings):
     postgres_url: str
     elasticsearch_url: str
     elasticsearch_local_url: str
+    elasticsearch_index: str
     ollama_url: str
     ollama_local_url: str
     ollama_model_name: str