FROM python:3.10-slim

# Install system dependencies (for Pillow and general Python packages)
USER root
RUN apt-get update && \
    apt-get install -y libjpeg-dev zlib1g-dev git && \
    rm -rf /var/lib/apt/lists/*

# Create non-root user
RUN adduser --disabled-password --gecos '' user
USER user

# Environment variables
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PORT=7860 \
    HF_HOME=/home/user/.cache/huggingface \
    TRANSFORMERS_CACHE=/home/user/.cache/huggingface/transformers \
    TORCH_HOME=/home/user/.cache/torch \
    OUTPUT_DIR=/home/user/outputs/beit-retina

WORKDIR $HOME/app

# Create necessary directories
RUN mkdir -p $HF_HOME $TRANSFORMERS_CACHE $TORCH_HOME $OUTPUT_DIR

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

# Copy app
COPY --chown=user . .

# Make startup script executable
RUN chmod +x startup.sh

# Expose port
EXPOSE 7860

# Start API
CMD ["bash", "startup.sh"]