fix: CodeRabbit 리뷰 반영 - healthcheck start_period 증가, pg_hba.conf scram-sha-256 적용, 모델 백그라운드 로드

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: kangcheolung

docker-compose.yml

@@ -57,7 +57,7 @@ services:
       interval: 30s
       timeout: 10s
       retries: 5
-      start_period: 120s
+      start_period: 900s
     networks:
       - docgrid-local
 

docker/opensql/init-and-start.sh

@@ -14,8 +14,8 @@ psql -d postgres -tc "SELECT 1 FROM pg_database WHERE datname = 'docgrid'" | gre
 psql -d docgrid -c "CREATE EXTENSION IF NOT EXISTS vector;"
 
 # Allow TCP connections from any host (needed for host-machine Spring Boot)
-grep -qxF "host all all 0.0.0.0/0 trust" "$PGDATA/pg_hba.conf" \
-    || echo "host all all 0.0.0.0/0 trust" >> "$PGDATA/pg_hba.conf"
+grep -qxF "host all all 0.0.0.0/0 scram-sha-256" "$PGDATA/pg_hba.conf" \
+    || echo "host all all 0.0.0.0/0 scram-sha-256" >> "$PGDATA/pg_hba.conf"
 
 # Stop temp postgres cleanly before handing off
 pg_ctl stop -D "$PGDATA" -m fast -w

embedding-server/main.py

@@ -1,3 +1,4 @@
+import threading
 from contextlib import asynccontextmanager
 from fastapi import FastAPI, HTTPException
 from pydantic import BaseModel
@@ -9,13 +10,19 @@
 model: BGEM3FlagModel | None = None
 
 
-@asynccontextmanager
-async def lifespan(app: FastAPI):
+def _load_model():
     global model
     logger.info("Loading BAAI/bge-m3 model...")
     model = BGEM3FlagModel("BAAI/bge-m3", use_fp16=True)
     logger.info("Model loaded.")
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    thread = threading.Thread(target=_load_model, daemon=True)
+    thread.start()
     yield
+    global model
     model = None