FROM python:3.12-slim-bookworm
WORKDIR /app
RUN apt-get update && apt-get install -y --no-install-recommends build-essential && rm -rf /var/lib/apt/lists/*
COPY requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
EXPOSE 18081
CMD ["python", "-m", "relay_gateway.gateway"]