Create Dockerfile

Dockerfile

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+FROM python:3.11-slim
+WORKDIR /app
+
+# system deps (必要なら)
+RUN apt-get update && apt-get install -y build-essential && rm -rf /var/lib/apt/lists/*
+
+# 依存関係を先にコピーしてキャッシュ層を作る
+COPY backend/requirements.txt ./requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+# アプリ本体
+COPY backend/app ./app
+
+# HF Spaces に環境変数を設定（Settings > Variables）で以下を登録してください
+# OPENAI_API_KEY, OPENAI_MODEL, HF_API_KEY, HF_SENTIMENT_MODEL, HF_TOXIC_MODEL, HF_SUMMARY_MODEL
+
+EXPOSE 8000
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]