FROM python:3.11-slim

# System dependencies for geospatial libs
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libgdal-dev \
    libgeos-dev \
    libproj-dev \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /code

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

# Create non-root user (required by HF Spaces)
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    HF_HOME=/tmp/hf_cache \
    TRANSFORMERS_CACHE=/tmp/hf_cache

WORKDIR $HOME/app

# Copy application code
COPY --chown=user . $HOME/app

# Expose port 7860 (HF Spaces default)
EXPOSE 7860

# Start FastAPI + Gradio server
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]