anchor.diff:  ENV RUST_BACKTRACE=1 \
     PATH=${HOME}/.cargo/bin:$PATH
   
  +ENV RUST_VERSION=1.36.0
  +
   RUN set -ex ;\
  -  curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain none -y ; \
  -  rustup toolchain install 1.36.0
  +  curl https://sh.rustup.rs -sSf | sh -s -- --no-modify-path --profile minimal --default-toolchain ${RUST_VERSION} -y
   
   # Mix and Rebar
   
  
positive.code: RUN groupadd --gid 1000 ubuntu && \
    useradd --uid 1000 --gid ubuntu --groups 0 --shell /bin/bash --home-dir ${HOME} --create-home ubuntu
  
  RUN chmod -R a+rw /usr
  
  # Docker client and group
  
  
negative.code: 
  ## Gradle
  
  RUN apt-get update && apt-get install -y --no-install-recommends openjdk-8-jre-headless gradle && \
      rm -rf /var/lib/apt/lists/*
  
  ## Node.js
  