simplify package install lines

Author: markusressel

Dockerfile

@@ -20,9 +20,8 @@ RUN apt-get update \
  && apt-get -y install sudo python3-pip python3-evdev \
  && apt-get clean && rm -rf /var/lib/apt/lists/* \
  && python3 -m venv ${VENV_HOME} \
- && ${VENV_HOME}/bin/pip install --upgrade pip \
+ && ${VENV_HOME}/bin/pip install --upgrade pip setuptools \
  && ${VENV_HOME}/bin/pip install "poetry==${POETRY_VERSION}" \
- && ${VENV_HOME}/bin/pip install "setuptools" \
  && ${VENV_HOME}/bin/poetry check \
  && POETRY_VIRTUALENVS_CREATE=false ${VENV_HOME}/bin/poetry install --no-interaction --no-cache --only main \
  && ${VENV_HOME}/bin/pip uninstall -y poetry