# Use an official lightweight Python image
FROM python:3.9-slim

# Set working directory
WORKDIR /code

# Install system dependencies for audio processing
RUN apt-get update && apt-get install -y \
    libsndfile1 \
    ffmpeg \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first to leverage Docker cache
COPY ./requirements.txt /code/requirements.txt
RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

# Copy the application code and model
COPY . .

# Expose the port FastAPI runs on
EXPOSE 7860

# Run with 1 worker to maximize RAM availability per request
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]