Dockerfile

FROM python:3.11-slim

# Install system deps for audio processing
RUN apt-get update && apt-get install -y --no-install-recommends     ffmpeg     libsndfile1     && rm -rf /var/lib/apt/lists/*

# Create non-root user (HF Spaces requirement)
RUN useradd -m -u 1000 user

# Create dirs BEFORE switching user
RUN mkdir -p /home/user/app/checkpoints /home/user/app/data/training_data /home/user/app/logs &&     chown -R user:user /home/user/app

ENV HOME=/home/user     PATH=/home/user/.local/bin:$PATH     PYTHONUNBUFFERED=1     PYTHONIOENCODING=UTF-8     HF_HOME=/home/user/.cache/huggingface     PORT=7860

WORKDIR /home/user/app

# Install Python deps
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip &&     pip install --no-cache-dir -r requirements.txt &&     pip install --no-cache-dir soundfile

COPY . .

USER user

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