FROM python:3-slim RUN mkdir /src COPY . /src/ RUN pip install --no-cache-dir --upgrade pip setuptools wheel \ && apt update && apt install -y git \ && cd /src \ && pip install --no-cache-dir .[colorama,d] \ && rm -rf /src \ && apt remove -y git \ && apt autoremove -y \ && rm -rf /var/lib/apt/lists/* CMD ["black"]