FROM python:3.10-slim

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

WORKDIR /app

# Install CPU-only torch first so pip doesn't pull the 2 GB CUDA build
RUN pip install --no-cache-dir torch --index-url https://download.pytorch.org/whl/cpu

COPY backend/requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY backend/ .

EXPOSE 8000

CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port ${PORT:-8000}"]