anchor.diff: -FROM ubuntu:18.04
  +FROM ubuntu:20.04
   
   RUN uname -a && uname -m
   
  
positive.code:     java -version && \
      jenv add /usr/lib/jvm/java-8-openjdk-$JDK_PLATFORM && \
      jenv add /usr/lib/jvm/java-11-openjdk-$JDK_PLATFORM && \
      jenv versions && \
      jenv global 11 && \
      java -version
  
  COPY README.md /README.md
  
  
negative.code:         ocaml \
          openjdk-8-jdk \
          openjdk-11-jdk \
          openjdk-16-jdk \
          openssh-client \
          pkg-config \
          ruby-full \
  