# Use Python base image
FROM python:3.10-slim

# Set environment variables
ENV HF_HOME=/app/hf_cache
ENV TRANSFORMERS_CACHE=/app/hf_cache
ENV SENTENCE_TRANSFORMERS_HOME=/app/hf_cache

# Install system deps
RUN apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*

# Install Python deps
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Pre-download the model
RUN python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('all-MiniLM-L6-v2')"

# Copy app code
COPY . /app
WORKDIR /app

# Expose port
EXPOSE 7860

# Start the app
CMD ["python", "app.py"]