# Use Python 3.9 slim image
FROM python:3.9-slim

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

# Create necessary directories and set permissions
RUN mkdir -p /tmp/huggingface && \
    chmod -R 777 /tmp/huggingface

# Create a non-root user
RUN useradd -m -s /bin/bash user && \
    chown -R user:user /tmp/huggingface

USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Set working directory
WORKDIR $HOME/app

# Create app directories
RUN mkdir -p $HOME/app/session_data $HOME/app/session_summaries $HOME/app/vector_db $HOME/app/models

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

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

# Make start.sh executable
RUN chmod +x start.sh

# Set environment variables
ENV PORT=7860
ENV TRANSFORMERS_CACHE=/tmp/huggingface
ENV HF_HOME=/tmp/huggingface
ENV TOKENIZERS_PARALLELISM=false
ENV TRANSFORMERS_VERBOSITY=error
ENV BITSANDBYTES_NOWELCOME=1

# Expose the port
EXPOSE 7860

# Run the application using start.sh
CMD ["./start.sh"]