# Use slim Python image
FROM python:3.10-slim

# Set environment variables for performance
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    OMP_NUM_THREADS=1 \
    MKL_NUM_THREADS=1 \
    OPENBLAS_NUM_THREADS=1 \
    VECLIB_MAXIMUM_THREADS=1 \
    NUMEXPR_NUM_THREADS=1

# Set working directory
WORKDIR /app

# Copy requirements and apt dependencies first
COPY requirements.txt apt.txt /app/

# Install system dependencies and clean up
RUN apt-get update && \
    xargs -a apt.txt apt-get install -y && \
    apt-get clean && rm -rf /var/lib/apt/lists/*

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Download spaCy model
RUN python -m spacy download en_core_web_sm

# Copy application files and models
COPY . /app/

# Expose Flask's default port
EXPOSE 7860

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