# Nexus-Core Inference - Fixed for Manual Model Upload
# HF Spaces CPU (2 vCPU, 16GB RAM)

FROM python:3.10-slim

WORKDIR /app

# System dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Python dependencies first (for caching)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY app.py .
COPY engine/ ./engine/

# Model is already uploaded to /app/models/ by HF Spaces
# Just verify it exists at runtime
# No download needed!

EXPOSE 7860

# Environment variables
ENV PYTHONUNBUFFERED=1
ENV OMP_NUM_THREADS=2
ENV MKL_NUM_THREADS=2
ENV ONNXRUNTIME_EXECUTION_MODE=sequential

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

# Run application
CMD ["python", "app.py"]