anchor.diff:      && rm -rf /var/cache/apk/* \
       && pip install --no-cache-dir ${PIP_PACKAGES} \
       && rm -rf /root/.cache \
  +    && gem install ${GEM_PACKAGES} \
       && adduser -D -h ${TEST_HOME_DIR} ${TEST_USER} \
       && usermod -aG dockremap ${TEST_USER} \
       && echo "${TEST_USER} ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
  
positive.code:     virtualenv \
      molecule \
      ansible \
      docker-py \
      azure-cli \
      packaging \
      msrestazure \
      pywinrm \ 
  "
  
  RUN \
  
negative.code:     linux-headers \
      sudo \
      rsync \
      curl \
      ruby \
      ruby-dev \
      ruby-rdoc \
      ruby-irb \
  "
  
  ENV PIP_PACKAGES="\
  