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+# ----------  build-stage 1: Python backend  ----------
+FROM python:3.11-slim AS backend-builder
+WORKDIR /opt/udr
+
+# Скопировать backend-код и зависимости
+COPY backend/requirements.txt backend/
+RUN pip install --no-cache-dir -r backend/requirements.txt
+
+COPY backend/ backend/
+
+# ----------  build-stage 2: Node frontend  ----------
+FROM node:20-alpine AS frontend-builder
+WORKDIR /opt/udr/frontend
+COPY frontend/package.json frontend/package-lock.json ./
+RUN npm ci
+COPY frontend/ ./
+RUN npm run build     # генерирует /.next статические файлы
+
+# ----------  final image: объединяем всё  ----------
+FROM python:3.10-slim
+WORKDIR /opt/udr
+
+# --- системные пакеты ---
+RUN apt-get update && apt-get install -y curl && rm -rf /var/lib/apt/lists/*
+
+# --- скопировать backend (из builder) ---
+COPY --from=backend-builder /usr/local/lib/python3.10 /usr/local/lib/python3.10
+COPY --from=backend-builder /opt/udr/backend /opt/udr/backend
+
+# --- скопировать статический фронт ---
+COPY --from=frontend-builder /opt/udr/frontend/.next /opt/udr/frontend/.next
+COPY --from=frontend-builder /opt/udr/frontend/public /opt/udr/frontend/public
+ENV NEXT_PUBLIC_BACKEND_URL=/api
+
+# ----------  запуск ----------
+ENV PYTHONUNBUFFERED=1
+EXPOSE 7860        # любой свободный порт HF Space
+CMD ["uvicorn", "backend.main:app", \
+     "--host", "0.0.0.0", "--port", "7860", \
+     "--proxy-headers", "--root-path", "/api"]