FROM python:3.14-slim

WORKDIR /app

# Install dependencies first (layer caching)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy bot
COPY bot.py .

# Non-root user
RUN useradd --no-create-home --shell /bin/false botuser
USER botuser

CMD ["python", "bot.py"]
