anchor.diff:      apt-get update -y && \
       apt-get upgrade -y && \
       ( \
  -        echo 'export JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64"' \
  -        echo 'export PATH="$PATH:$JAVA_HOME/bin"' \
  +        echo 'export JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64"'; \
  +        echo 'export PATH="$PATH:$JAVA_HOME/bin"'; \
       ) >>/etc/profile.d/openjdk.sh && \
       . /etc/profile.d/openjdk.sh && \
       apt-get install -y -t jessie-backports openjdk-8-jdk && \
  
positive.code: 
      # sudo configuration
      ( \
          echo '%root ALL=(ALL) NOPASSWD: ALL' \
          echo 'Defaults:%root !requiretty' \
      ) >>/etc/sudoers.d/root && \
      chmod 440 /etc/sudoers.d/root && \
  
  
negative.code: 
      # install gopherlab
      ( \
          echo 'export GOPATH="/opt/go"'; \
          echo 'export PATH="$PATH:/usr/local/go/bin:$GOPATH/bin"'; \
      ) >>/etc/profile.d/golang.sh && \
      . /etc/profile.d/golang.sh && \
      ln -s /usr/local/go/bin/go /bin/ && \
  