# Use lightweight Python image
FROM python:3.10-slim

# Prevent Python from writing .pyc files
ENV PYTHONDONTWRITEBYTECODE=1

# Ensure logs appear immediately
ENV PYTHONUNBUFFERED=1

# Set working directory
WORKDIR /app

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

# Copy requirements first (for caching)
COPY requirements.txt .

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

# Copy application files
COPY . .

# Expose port used by Flask / Gunicorn
EXPOSE 7860

# Start server (production-safe)
CMD ["gunicorn", "app:app", "--bind", "0.0.0.0:7860", "--workers", "1", "--timeout", "120"]