FROM python:3.9-slim

# Install system dependencies
RUN apt-get update && apt-get install -y \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

# Create a non-root user
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Setup working directory in home
WORKDIR $HOME/app

# Copy requirements FIRST to leverage Docker cache
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --user -r requirements.txt

# Copy the rest of the application
COPY --chown=user . .

# Environment setup
ENV PORT=7860
EXPOSE 7860

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