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FROM python:3.10-slim

# HuggingFace Spaces runs as non-root user 1000
RUN useradd -m -u 1000 user
WORKDIR /app

# System deps for piper-tts (needs native libs)
RUN apt-get update && apt-get install -y \
    libespeak-ng1 \
    libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# Install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy app files
COPY --chown=user . .

# Create writable dirs for models and audio output
RUN mkdir -p /app/models /app/static/audio && \
    chown -R user:user /app

USER user

# HuggingFace Spaces requires port 7860
EXPOSE 7860

CMD ["python", "app.py"]