fix: fixed vectordb loneliness

docker-compose.yaml

@@ -170,12 +170,14 @@ services:
       - ./data/vectordb:/var/lib/postgresql/data
     profiles: ["rag", "full"]
     healthcheck:
-      test: [ "CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-alfred} -d ${POSTGRES_DB_NAME:-alfred}" ]
+      test: [ "CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB_NAME}" ]
       interval: 5s
       timeout: 5s
       retries: 5
     networks:
-      - alfred-net
+      alfred-net:
+        aliases:
+          - db
 
   # --- QBITTORENT (Optional) ---
   qbittorrent: