# Use official slim Python image
FROM python:3.11-slim

# Set environment variables for Python
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

# Install required system packages for FAISS and building python packages
RUN apt-get update && apt-get install -y \
    build-essential \
    libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# Set the working directory
WORKDIR /app

# Copy dependencies file first for docker caching
COPY requirements.txt .

# Install dependencies
RUN pip install --no-cache-dir --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt

# Create necessary directories
RUN mkdir -p data/documents vector_db logs

# Copy the rest of the application
COPY . .

# Expose port running the FastAPI server
EXPOSE 8000

# Command to run the uvicorn API server
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "4"]