FROM python:3.10-slim

# Install system dependencies for geospatial packages
RUN apt-get update && \
    apt-get install -y \
    libgeos-dev \
    proj-bin \
    libproj-dev \
    libgdal-dev \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Copy requirements first to leverage Docker cache
COPY requirements.txt .

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

# Copy application code
COPY . .

# Set up user and permissions
RUN useradd -m -u 1001 streamlit
USER streamlit

# Expose port and run
EXPOSE 8501
CMD ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0"]