anchor.diff:  RUN mkdir ${workdir}
   WORKDIR ${workdir}
   
  -RUN apt-get update --fix-missing
  -RUN apt-get install curl git apt-transport-https --assume-yes
  +RUN apt-get -y update --fix-missing
  +RUN apt-get -y install curl git apt-transport-https --assume-yes
   
   # Install Swift
   RUN curl -o swift.tar.gz https://swift.org/builds/swift-4.1.3-release/ubuntu1604/swift-4.1.3-RELEASE/swift-4.1.3-RELEASE-ubuntu16.04.tar.gz
  
positive.code: 
  # Python
  RUN add-apt-repository ppa:jonathonf/python-3.6
  RUN apt-get update
  RUN apt-get install python3.6 --assume-yes
  RUN curl https://bootstrap.pypa.io/get-pip.py | python3.6
  RUN pip3.6 install mypy python-dateutil
  
  # Dart
  RUN apt-get install apt-transport-https
  RUN sh -c 'curl https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -'
  RUN sh -c 'curl https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_stable.list > /etc/apt/sources.list.d/dart_stable.list'
  RUN apt-get update
  RUN apt-get install dart
  
  # Crystal
  RUN curl -sL "https://keybase.io/crystal/pgp_keys.asc" | apt-key add -
  RUN echo "deb https://dist.crystal-lang.org/apt crystal main" | tee /etc/apt/sources.list.d/crystal.list
  RUN apt-get update
  RUN apt-get install crystal --assume-yes
  
  ENV PATH="${workdir}/node_modules/.bin:${PATH}"
  
  
negative.code: ENV PATH="/root/.cargo/bin:${PATH}"
  
  # Install Pike
  RUN apt-get -y update
  RUN apt-get -y install pike8.0-full --assume-yes
  
  # Tool to limit elm-make cores
  RUN git clone https://github.com/obmarg/libsysconfcpus.git
  RUN cd libsysconfcpus && ./configure && make && make install
  
  # Ruby
  RUN apt-get -y install ruby --assume-yes
  RUN gem install bundler
  
  # Kotlin
  