FROM python:3.10-slim

WORKDIR /app

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Download model locally during build to avoid downtime on first request
RUN python -c "from transformers import BlipProcessor; BlipProcessor.from_pretrained('Salesforce/blip-image-captioning-base')" || true

COPY . .

# Expose port that HuggingFace Spaces/Render uses
EXPOSE 7860

CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]