anchor.diff:  	&& (cd /usr/local/lib/neovim; make; make install) \
   
   	# rcm
  -	export rcm_version=1.3.0-1 \
  -
  +	&& export rcm_version=1.3.0-1 \
   	&& curl https://thoughtbot.github.io/rcm/debs/rcm_${rcm_version}_all.deb \
   		-o /tmp/rcm.deb \
   	&& rcm_sha=2e95bbc23da4a0b995ec4757e0920197f4c92357214a65fedaf24274cda6806d \
   	sha=$(sha256sum /tmp/rcm.deb | cut -f1 -d' ') \
   		[ "$sha" = "$rcm_sha" ] \
  -	&& dpkg -i /tmp/rcm.deb && \
  +	&& dpkg -i /tmp/rcm.deb \
   	&& rm /tmp/rcm.deb \
   
   	&& apt-get install -y --no-install-recommends \
  
positive.code: 	# dotfiles
  	git clone --depth 1 \
  		https://github.com/thoughtbot/dotfiles.git \
  		/usr/local/lib/thoughtbot-dotfiles && \
  	git clone --depth 1 \
  		https://github.com/langri-sha/dotfiles.git \
  		/usr/local/lib/langri-sha-dotfiles && \
  
  	# root user
  	chsh -s /bin/zsh root && \
  	USER=root rcup && \
  	TMUX_PLUGIN_MANAGER_PATH=$HOME/.tmux/plugins $HOME/.tmux/plugins/tpm/bin/install_plugins
  
negative.code: 
  ENV \
  	RCRC=/usr/local/lib/rcrc \
  	TERM=xterm-256color \
  	XDG_CONFIG_HOME=$HOME/.config
  
  CMD ["/bin/zsh"]
  