anchor.diff:  # Install fzy
   # ------------------
   RUN cd $HOME && \
  -    apt install -y wget && \
  +    sudo apt install -y wget && \
       wget https://github.com/jhawthorn/fzy/releases/download/0.8/fzy_0.8-1_amd64.deb && \
       dpkg -i fzy_0.8-1_amd64.deb && \
       rm fzy_0.8-1_amd64.deb
  
positive.code: # ------------------
  # Install eclim requirements
  # ------------------
  RUN apt-get install -y openjdk-8-jdk ant maven \
                          xvfb xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic
  
  # ------------------
  # Installing Eclipse & eclim
  # ------------------
  RUN cd /root && \
      curl -L "http://ftp.jaist.ac.jp/pub/eclipse/technology/epp/downloads/release/neon/3/eclipse-jee-neon-3-linux-gtk-x86_64.tar.gz" | tar zxv && \
      mkdir -p /root/workspace && \
      mkdir -p /root/reps && \
      cd /root/reps && \
      git clone git://github.com/ervandew/eclim.git && \
      cd eclim && ant -Declipse.home=/root/eclipse
  
  ENV LANG ja_JP.UTF-8
  ENV LANGUAGE ja_JP.UTF-8
  
negative.code: # Install universal-ctags
  # ------------------
  # Ref: https://github.com/universal-ctags/ctags/blob/master/docs/autotools.rst
  RUN sudo apt install -y dh-autoreconf pkg-config && \
      git clone https://github.com/universal-ctags/ctags.git $HOME/reps/universal-ctags/ctags && \
      cd $HOME/reps/universal-ctags/ctags && \
      ./autogen.sh && \
      ./configure && \
      make && \
      sudo make install
  
  # ------------------
  # Install Go
  