anchor.diff:  ENV LC_ALL C.UTF-8
   ENV LANG C.UTF-8
   
  -RUN apt-get update && apt-get install -y gpg curl wget unzip xz-utils git openssh-client && apt-get clean -y
  +RUN apt-get update && apt-get install -y gpg curl wget unzip xz-utils git openssh-client bsdtar && apt-get clean -y
   
   ## Node.js
   
   # START copy Node.js from https://github.com/nodejs/docker-node/blob/master/10/jessie/Dockerfile
   
  -ENV NODE_VERSION 10.15.0
  +ENV NODE_VERSION 10.15.1
   
   RUN ARCH= && dpkgArch="$(dpkg --print-architecture)" \
     && case "${dpkgArch##*-}" in \
  
positive.code: 
  ENV CGO_ENABLED=0
  
  # Set up ubuntu user
  
  RUN groupadd --gid 1000 ubuntu \
  
negative.code:   && curl -fsSLO --compressed "https://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
    && gpg --batch --decrypt --output SHASUMS256.txt SHASUMS256.txt.asc \
    && grep " node-v$NODE_VERSION-linux-$ARCH.tar.xz\$" SHASUMS256.txt | sha256sum -c - \
    && bsdtar -xJf "node-v$NODE_VERSION-linux-$ARCH.tar.xz" -C /usr/local --strip-components=1 --no-same-owner \
    && rm "node-v$NODE_VERSION-linux-$ARCH.tar.xz" SHASUMS256.txt.asc SHASUMS256.txt \
    && ln -s /usr/local/bin/node /usr/local/bin/nodejs
  
  