anchor.diff:    && go get golang.org/x/tools/cmd/present \
     && go get github.com/jmhodges/justrun \
     && go get github.com/golang/protobuf/protoc-gen-go
  -
  -# go - working dir
  -ENV GOPATH=$GOPATH_USER
   RUN mkdir -p $GOPATH/src/github.com/leighmcculloch
  +RUN mkdir -p $GOPATH/src/github.com/lionelbarrow
   RUN mkdir -p $GOPATH/src/4d63.com
   
  -# go - old app engine go sdk
  -RUN curl -O https://storage.googleapis.com/appengine-sdks/featured/go_appengine_sdk_linux_amd64-1.9.61.zip \
  -  && unzip go_appengine_sdk_linux_amd64-1.9.61.zip -d /usr/local/google-appengine-sdk-go/ \
  -  && rm go_appengine_sdk_linux_amd64-1.9.61.zip
  -ENV PATH="${PATH}:/usr/local/google-appengine-sdk-go/go_appengine"
  +# ruby
  +RUN gem install bundler
   
  -# ruby
  -RUN apt-get -y install ruby ruby-dev
  -RUN gem install bundler
  +# nodejs
  +RUN curl -sL https://deb.nodesource.com/setup_10.x | bash - \
  +  && apt-get install -y nodejs \
  +  && curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
  +  && echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list \
  +  && apt-get update \
  +  && apt-get install -y yarn
   
   # vim
   RUN apt-get -y install vim-nox
  
positive.code:     tree \
      jq \
      python python-pip \
      sassc \
      protobuf-compiler \
      apt-transport-https \
  
negative.code: 
  # go - install
  RUN curl https://dl.google.com/go/go1.10.3.linux-amd64.tar.gz | tar xz -C /usr/local
  ENV GOPATH="$HOME/go"
  ENV PATH="${PATH}:/usr/local/go/bin:$GOPATH/bin"
  RUN go get github.com/nsf/gocode \
    && go get github.com/golang/dep/cmd/dep \
    && go get github.com/alecthomas/gometalinter \
  