Dockerfile

# Streamlit Frontend Dockerfile
FROM python:3.12-slim

# Set working directory
WORKDIR /app

# Copy requirements file
COPY requirements.txt .

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

# Copy application code
COPY app.py .
COPY .streamlit/ .streamlit/

# Expose port (Hugging Face Spaces uses 7860)
EXPOSE 7860

# Set default backend URL (can be overridden with environment variable)
ENV BACKEND_URL=http://localhost:7860

# Health check
HEALTHCHECK --interval=30s \
    --timeout=10s \
    --start-period=5s \
    --retries=3 \
    CMD curl -f http://localhost:7860/_stcore/health || exit 1

# Run Streamlit
CMD ["streamlit", "run", "app.py"]