anchor.diff:    locale-gen en_US.UTF-8 && \
     /usr/sbin/update-locale LANG=en_US.UTF-8 && \
   
  -  # apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5 && \
  -  # apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32 && \
  +  apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5 && \
  +  apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
   
  -  ###############
  -  # system update
  -  ###############
  -  apt-get update && \
  +# system update
  +RUN \
     apt-get update && \
     apt-get -y upgrade && \
  -  apt-get -y autoremove && \
  -  ###############
  +  apt-get -y autoremove
   
  +RUN \
     apt-get install -y git-core curl axel htop && \
   
     # extra ppa
     apt-get install -y software-properties-common && \
  -  add-apt-repository ppa:fish-shell/nightly-master && \
  +  add-apt-repository ppa:fish-shell/nightly-master
   
  -  ###############
  -  # system update
  -  ###############
  -  apt-get update && \
  +# system update
  +RUN \
     apt-get update && \
     apt-get -y upgrade && \
  -  apt-get -y autoremove && \
  -  ###############
  +  apt-get -y autoremove
   
  -  # zsh && fish
  -  apt-get install -y fish zsh
  +# zsh && fish
  +RUN apt-get install -y fish zsh
   
   # oh my zsh
   RUN \
  
positive.code: 
    chmod +x /tmp/omf/install && \
    chmod +x /tmp/omf/install_omf.py && \
    bash -c '/tmp/omf/install_omf.py' && \
    bash -c '/tmp/omf/install'
  
  RUN \
    mv ~/.config/fish/config.fish ~/.config/fish/config.fish.bak && \
  
negative.code: set -x LC_ALL en_US.UTF-8 \n\
  set -x LC_CTYPE en_US.UTF-8 \n\
    " ~/.config/fish/config.fish.bak > ~/.config/fish/config.fish && \
    fish -c 'omf install robbyrussell'
  