anchor.diff:  # Start by changing the apt output, as stolen from Discourse's Dockerfiles.
   RUN echo "debconf debconf/frontend select Teletype" | debconf-set-selections && \
     apt-get update && \
  -# install packages needed
  +# install packages needed/wanted
     apt-get install -y \
     build-essential \
     automake \
  
positive.code:   ssh \
    zsh \
    ruby \
    python-dev
  
  
  # zsh - ignoring any return status from it since it returns '1' but succeeded anyway
  RUN chsh -s /usr/bin/zsh root && \
    curl -L https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh | sh || true && \
  
  # setup vim, plugins still have to be installed and youcompleteme compiled manually
    git clone https://github.com/copenhas/dotvim.git ./code/dotvim && \
    ln -s ./code/dotvim/vim .vim && \
    ln -s ./code/dotvim/vimrc .vimrc && \
    git clone https://github.com/gmarik/vundle.git ./code/dotvim/vim/bundle/vundle && \
  
  # Fix for occasional errors in perl stuff (git, ack) saying that locale vars
  # aren't set.
  
negative.code:   man \
    ack-grep \
    llvm \
    clang \
    git \
    vim \
    curl \
  