FROM python:3.10-slim

# Install system dependencies for OpenCV
RUN apt-get update && apt-get install -y --no-install-recommends \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender1 \
    libgomp1 \
    libgl1 \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /var/cache/apt/*

WORKDIR /app

# Copy and install requirements
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip setuptools wheel && \
    pip install --no-cache-dir --default-timeout=1000 -r requirements.txt

# Copy model files (changes less frequently)
COPY trainedmodels/ ./trainedmodels/

# Copy application code (changes most frequently)
COPY app.py inference.py ./

# Environment optimizations
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1

EXPOSE 7860

# Optimized for HuggingFace Spaces
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860", "--log-level", "info", "--timeout-keep-alive", "75"]