Dockerfile

FROM python:3.11-slim

WORKDIR /app

# Install system dependencies for geopandas + GDAL
RUN apt-get update && apt-get install -y \
    gdal-bin \
    libgdal-dev \
    g++ \
    && rm -rf /var/lib/apt/lists/*

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

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

# Copy application code
COPY . .

# Create directories for logs (ephemeral but prevents errors)s
RUN mkdir -p logs

# Cloud Run injects PORT environment variable
ENV PORT=7860

# Expose port for documentation
EXPOSE 7860

# Single worker - your ONNX models are too large for multiple workers
CMD exec uvicorn main:app --host 0.0.0.0 --port ${PORT} --workers 1 --timeout-keep-alive 300