diff --git a/Dockerfile b/Dockerfile
index d98cddb..37a1eae 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,20 @@
 FROM python:3.11-slim
 
-# System deps
+# System deps needed for native extensions:
+#   gcc, libpq-dev  → asyncpg (Postgres driver)
+#   libffi-dev      → cryptography
+#   build-essential → general C compilation fallback
+#   curl            → healthcheck probe
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    gcc libpq-dev curl \
+    gcc build-essential libpq-dev libffi-dev curl \
     && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 
-# Install Python deps first (layer cache)
+# Upgrade pip + install wheel first so pre-built wheels are preferred
+RUN pip install --no-cache-dir --upgrade pip wheel setuptools
+
+# Install Python deps (separate layer for cache efficiency)
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
diff --git a/README.md b/README.md
index e69de29..b7da29e 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,15 @@
+1. 填 backend .env（生产值）：
+
+POSTGRES_PASSWORD=强密码
+FRONTEND_URL=https://你的前端域名
+ENCRYPTION_KEY=之前生成的那个
+AI_API_KEY=sk-...
+ENVIRONMENT=production
+2. 改前端 .env.local：
+
+NEXT_PUBLIC_API_URL=https://api.你的域名.com
+NEXT_PUBLIC_WS_URL=wss://api.你的域名.com
+启动：
+
+cd backend
+docker compose up -d
diff --git a/requirements.txt b/requirements.txt
index 74355ee..2c9a9a6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 fastapi==0.111.0
 uvicorn[standard]==0.29.0
 sqlalchemy[asyncio]==2.0.30
+aiosqlite==0.20.0
 asyncpg==0.29.0
 alembic==1.13.1
 pydantic==2.7.1
@@ -14,4 +15,4 @@ eth-account==0.11.0
 redis==5.0.4
 apscheduler==3.10.4
 python-dotenv==1.0.1
-cryptography>=42
+cryptography==42.0.8