FROM pytorch/pytorch:2.5.1-cuda12.1-cudnn9-runtime

WORKDIR /app

# System packages
RUN apt-get update && apt-get install -y \
    git ffmpeg libsndfile1 \
    && rm -rf /var/lib/apt/lists/*

# Python deps (torch already in base image)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY app.py .

# HF cache
ENV HF_HOME=/app/.cache
ENV GRADIO_SERVER_NAME=0.0.0.0
ENV GRADIO_SERVER_PORT=7860
EXPOSE 7860

# Non-root user required by HF Spaces
RUN useradd -m -u 1000 user && chown -R user /app
USER user

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