anchor.diff:  
   # Fix for occasional errors in perl stuff (git, ack) saying that locale vars
   # aren't set.
  -    locale-gen en_US en_US.UTF-8 && dpkg-reconfigure locales
  +    apt-get install -y locales &&\
  +    locale-gen --purge en_US.UTF-8 &&\
  +    update-locale LANG=en_US.UTF-8
   
   RUN useradd dev -d /home/dev -m -s /bin/zsh &&\
       adduser dev sudo && \
  
positive.code:     echo "host_list=(dev)" >> /usr/local/etc/wemux.conf &&\
  
  # Install neovim
      add-apt-repository ppa:neovim-ppa/unstable &&\
      apt-get update &&\
      apt-get install neovim &&\
  
  # Install Homesick, through which zsh and vim configurations will be installed
      apt-get install -y ruby &&\
  
negative.code: FROM ubuntu:17.04
  MAINTAINER Don Petersen <don@donpetersen.net>
  
  # Start by changing the apt output, as stolen from Discourse's Dockerfiles.
  