anchor.diff:  
   # PHP
   RUN apt-get install -y php5 php5-dev php-pear
  -RUN curl -sS https://getcomposer.org/installer | php
  +RUN curl --silent --show-error https://getcomposer.org/installer | php
   RUN mv composer.phar /usr/local/bin/composer
   RUN mkdir jsl && \
  -  wget http://www.javascriptlint.com/download/jsl-0.3.0-src.tar.gz && \
  +  wget –quiet http://www.javascriptlint.com/download/jsl-0.3.0-src.tar.gz && \
     tar xzf jsl-0.3.0-src.tar.gz && \
     cd jsl-0.3.0/src && \
     make -f Makefile.ref && \
  
positive.code: # Java
  RUN apt-get install -y default-jdk
  RUN apt-get install -y gdebi && \
    wget http://ppa.launchpad.net/natecarlson/maven3/ubuntu/pool/main/m/maven3/maven3_3.2.1-0~ppa1_all.deb && \
    gdebi --non-interactive maven3_3.2.1-0~ppa1_all.deb && \
    ln -s /usr/share/maven3/bin/mvn /usr/bin/mvn && \
    rm -rf maven3_3.2.1-0~ppa1_all.deb
  RUN git clone https://github.com/yegor256/rultor.git && \
    cd rultor && \
    /bin/bash -l -c "gem install jekyll" && \
    mvn clean install -Pqulice && \
    cd .. && \
    rm -rf rultor
  
  
negative.code: RUN apt-get install -y gnupg gnupg2
  RUN apt-get install -y jq
  RUN apt-get install -y bsdmainutils
  RUN apt-get install -y libxml2-utils
  RUN apt-get install -y nodejs npm && ln -s /usr/bin/nodejs /usr/bin/node
  RUN apt-get install -y build-essential
  RUN apt-get install -y automake autoconf
  