FROM python:3.10-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    curl \
    git \
    && rm -rf /var/lib/apt/lists/*

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

# Install Python dependencies
# We also ensure openenv is installed directly
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Create assets directory to ensure it exists for plots
RUN mkdir -p assets

# Expose port for FastAPI server / HF Spaces
EXPOSE 7860

# Health check to ensure clean startup and running environment
HEALTHCHECK --interval=30s --timeout=10s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

# Start the FastAPI server
CMD ["uvicorn", "server.app:app", "--host", "0.0.0.0", "--port", "7860"]