FROM python:3.11-slim

# Environment variables for HF deployment
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1
ENV SESSION_BACKEND=jwt
ENV APP_ENV=production
ENV PORT=7860

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Copy requirements first for better caching
COPY requirements.txt .

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

# Copy application code
COPY . .

# Create non-root user
RUN useradd -m -u 1000 user && \
    chown -R user:user /app
USER user

# Expose port
EXPOSE 7860

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