feat: default engine config

Author: XiaJunjie2020

backend/apps/db/engine.py

@@ -12,7 +12,7 @@
 
 def get_engine_config():
     return DatasourceConf(username=settings.POSTGRES_USER, password=settings.POSTGRES_PASSWORD,
-                          host="127.0.0.1", port=settings.POSTGRES_PORT, database=settings.POSTGRES_DB,
+                          host=settings.POSTGRES_SERVER, port=settings.POSTGRES_PORT, database=settings.POSTGRES_DB,
                           dbSchema="public")