anchor.diff:      java -version && \
       jenv add /usr/lib/jvm/java-8-openjdk-$JDK_PLATFORM && \
       jenv add /usr/lib/jvm/java-11-openjdk-$JDK_PLATFORM && \
  +    jenv add /usr/lib/jvm/java-16-openjdk-$JDK_PLATFORM && \
       jenv versions && \
       jenv global 11 && \
       java -version
  +
  +RUN bash -c "source ~/.sdkman/bin/sdkman-init.sh && sdk install gradle 7.2"
   
   COPY README.md /README.md
   
  
positive.code:         ocaml \
          openjdk-8-jdk \
          openjdk-11-jdk \
          openssh-client \
          pkg-config \
          ruby-full \
  
negative.code: FROM ubuntu:20.04
  
  RUN uname -a && uname -m
  
  