# Use the official Python image
FROM python:3.9

# Add a non-root user and set up the environment
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

# Set Hugging Face cache directory and disable tokenizer parallelism
ENV HF_HOME=/app/hf_cache
ENV TOKENIZERS_PARALLELISM=false

# Set working directory
WORKDIR /app

# Copy dependencies first for caching
COPY --chown=user ./requirements.txt requirements.txt
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# Create cache directory for Hugging Face and ensure permissions
RUN mkdir -p /app/hf_cache && chown user:user /app/hf_cache

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

# Start Gunicorn with increased timeout and multiple workers
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--timeout", "300", "--workers", "2", "chatbot:app"]