# Use a slim version of Python to reduce base image size
FROM python:3.13

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Set work directory
WORKDIR /app

# Install system dependencies if needed (e.g., libmagic for unstructured)
RUN apt-get update && apt-get install -y --no-install-recommends \
    libmagic1 \
    && rm -rf /var/lib/apt/lists/*

# Copy only requirements first to leverage Docker cache
COPY requirements.txt .

# Install dependencies and clean up cache in one layer
# TIP: If deploying to CPU-only environments, consider installing CPU versions of torch
RUN pip install --no-cache-dir -r requirements.txt

# Copy the rest of the application code
COPY . .

# Run the application
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]