anchor.diff:  #ENV no_proxy 'localhost,127.0.0.1,.<example.com>'
   
   # create apt proxy
  -#RUN echo 'Acquire::http::Proxy "<proxy server>";' >>/etc/apt/apt.cond.d/20proxy
  -
  -# set git proxy
  -#RUN git config --global http.proxy <proxy server>:<port>; \
  -#git config --global https.proxy <proxy server>:<port>
  +#RUN echo 'Acquire::http::Proxy "<proxy server>";' >>/etc/apt/apt.conf.d/20proxy
   
   
   
  
positive.code:     libcurl4-openssl-dev \
      tk8.6 \
      tcl8.6 \
      wget \
      openssh-client \
      doxygen \
  
negative.code: pytest-xdist \n\
  # for doxygen \n\
  doxypy \n\
  mock \n\
  ' > /root/requirements.txt && pip install --upgrade -r /root/requirements.txt && rm /root/requirements.txt && rm -rf /root/.cache/pip
  
  
  # always need /etc/environment for IXIA and TCL vars
  COPY docker_environment_variables /etc/environment
  
  ARG TAF_ROOT=/root/taf
  # copy TAF repo to docker image
  COPY /  $TAF_ROOT/
  
  