# Use an official Python runtime
FROM python:3.11-slim

# Force Python to print logs immediately
ENV PYTHONUNBUFFERED=1

# 1. FIX MATPLOTLIB WARNING: Give it a writable temp folder
ENV MPLCONFIGDIR=/tmp/matplotlib

# 2. FIX LIGHTGBM ERROR: Install the missing Linux C++ library
RUN apt-get update && apt-get install -y libgomp1 && rm -rf /var/lib/apt/lists/*

# Set the working directory
WORKDIR /app

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

# Copy all your backend files into the container
COPY . .

# Grant file permissions to Hugging Face user
RUN chown -R 1000:1000 /app
USER 1000

# Hugging Face Spaces MUST expose port 7860
EXPOSE 7860

# Command to run your FastAPI server
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]