FROM python:3.11-slim

# Install system dependencies for GDAL/rasterio
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    build-essential \
    libgdal-dev \
    gdal-bin \
    libgeos-dev \
    libproj-dev \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Set GDAL environment
ENV GDAL_CONFIG=/usr/bin/gdal-config

WORKDIR /app

# Copy requirements first for caching
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy app files
COPY app.py utils.py ./

# Expose Streamlit port (HF Spaces uses 7860)
EXPOSE 7860

# Health check
HEALTHCHECK CMD curl --fail http://localhost:7860/_stcore/health || exit 1

# Run Streamlit
CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0", "--server.enableCORS=false", "--server.enableXsrfProtection=false"]