迁移 PostgreSQL 并新增 Python API 服务

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tushare/Dockerfile

@@ -5,12 +5,12 @@ ENV PYTHONDONTWRITEBYTECODE=1 \
     PIP_NO_CACHE_DIR=1 \
     PIP_DISABLE_PIP_VERSION_CHECK=1 \
     TZ=Asia/Shanghai \
-    DB_PATH=/app/data/futures.db
+    DATABASE_URL=postgresql://trade:trade@postgres:5432/futures
 
 WORKDIR /app
 
-# 运行时依赖 + 时区
-RUN apk add --no-cache tzdata \
+# 运行时依赖 + 时区 + libpq(psycopg2)
+RUN apk add --no-cache tzdata libpq \
     && cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
     && echo "Asia/Shanghai" > /etc/timezone
 
@@ -25,4 +25,4 @@ RUN adduser -D -u 1000 app \
 COPY --chown=app:app src ./src
 USER app
 
-CMD ["python", "-m", "src.main"]
+CMD ["uvicorn", "src.api:app", "--host", "0.0.0.0", "--port", "8000"]