chore: 更新 Docker 部署配置及文档

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

docker/app/Dockerfile.backend

@@ -11,6 +11,8 @@ RUN pip install --upgrade pip \
     && pip install -r /tmp/requirements.txt \
     && rm -f /tmp/requirements.txt
 
+RUN python -c "import fastapi, uvicorn, psycopg, sqlalchemy, redis, jwt, passlib, httpx, alembic; print('backend dependency check ok')"
+
 RUN mkdir -p /opt/yg-ft/logs/backend /data/yg-ft \
     && chmod -R 0775 /opt/yg-ft /data/yg-ft
 

docker/app/docker-compose.yml

@@ -75,7 +75,7 @@ services:
       PGDATA: /var/lib/postgresql/data/pgdata
     volumes:
       - postgres_data:/var/lib/postgresql/data
-      - ../../docs/postgres-schema.sql:/docker-entrypoint-initdb.d/001-schema.sql:ro
+      - ../../backend/app/db/sql/001_platform_runtime.sql:/docker-entrypoint-initdb.d/001-platform-runtime.sql:ro
     ports:
       - "${POSTGRES_PORT:-15432}:5432"
     networks: