Dockerfile

FROM python:3.11-slim

# System dependencies
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        ffmpeg \
        git \
        build-essential \
    && rm -rf /var/lib/apt/lists/*

# Install numpy FIRST (pkuseg needs it at build time in setup.py)
RUN pip install --no-cache-dir "numpy>=1.24,<2"

# Install chatterbox-tts with --no-build-isolation so pkuseg sees numpy
RUN pip install --no-cache-dir --no-build-isolation chatterbox-tts

# Install remaining dependencies
RUN pip install --no-cache-dir \
    torch \
    torchaudio \
    soundfile \
    pydub \
    fastapi \
    uvicorn \
    gradio==5.31.0

# Create non-root user (required by HF Spaces)
RUN useradd -m -u 1000 user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

WORKDIR /home/user/app

# Copy application
COPY --chown=user app.py .

USER user

EXPOSE 7860

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