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+FROM python:3.11-slim
+
+# ffmpeg is the only system dependency
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends ffmpeg && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app.py .
+
+# HuggingFace Spaces routes external traffic to port 7860
+EXPOSE 7860
+
+CMD ["python", "app.py"]