# Use an official Python runtime as a parent image
FROM python:3.10-slim

# Set the working directory
WORKDIR /app

# Install system dependencies (needed for AI/ML libraries)
# libgomp1 is required for XGBoost and LightGBM
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    cmake \
    libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements and install them
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy the rest of the backend code
COPY . .

# Expose the port FastAPI runs on
EXPOSE 7860

# Command to run the app (Hugging Face uses port 7860)
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]