Create Dockerfile

Dockerfile

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+FROM python:3.10-slim
+
+# Prevents Python from writing .pyc files & enables unbuffered logs
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+WORKDIR /code
+
+# System deps (optional but handy)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl ca-certificates && \
+    rm -rf /var/lib/apt/lists/*
+
+# Python deps
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# App code
+COPY . .
+
+# HF Spaces will set OPENAI_API_KEY as a Secret in the environment
+EXPOSE 7860
+
+# Start FastAPI with uvicorn
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]