FROM python:3.10-slim

# Set working directory
WORKDIR /app

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

# Copy requirements first for better Docker layer caching
COPY requirements.txt .

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

# Copy app source code
COPY app.py .

# Expose port 7860 (required by HF Spaces)
EXPOSE 7860

# Set environment variables
ENV PORT=7860
ENV HOST=0.0.0.0
ENV PYTHONUNBUFFERED=1

# HuggingFace cache dir (Spaces uses /data for persistent storage, fallback to /tmp)
ENV HF_HOME=/tmp/hf_cache
ENV TRANSFORMERS_CACHE=/tmp/hf_cache

# Run the FastAPI app with uvicorn
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]