FROM python:3.9-slim

WORKDIR /app

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

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

# Copy the rest of the application
COPY . .

# Expose the port the app runs on (Hugging Face default is 7860)
EXPOSE 7860

# Command to run the application
# We use python main.py to leverage our port-discovery logic in code
CMD ["python", "main.py"]