FROM python:3.11

# Create a non-root user
RUN useradd -m -u 1000 user
USER user

# Set environment variables
ENV HOME=/home/user \
    VIRTUAL_ENV=/home/user/venv \
    PATH="/home/user/.local/bin:/home/user/venv/bin:$PATH"

# Create virtual environment
RUN python -m venv $VIRTUAL_ENV

# Set working directory
WORKDIR /app

# Copy and install dependencies
COPY --chown=user requirements.txt .
RUN pip install --upgrade pip && pip install --no-cache-dir -r requirements.txt

# Copy source code
COPY --chown=user . .

# Expose port (optional but good practice)
EXPOSE 7860

# Launch app
CMD ["python", "-m", "chainlit", "run", "app.py", "--host", "0.0.0.0", "--port", "7860"]