anchor.diff:  LABEL base.image="ubuntu:bionic"
   LABEL dockerfile.version="1.0.0"
   LABEL software="SneakerNet"
  -LABEL software.version="0.19.10"
  +LABEL software.version="0.20.0"
   LABEL description="SneakerNet QA/QC system for primary genomic data"
   LABEL website="https://github.com/lskatz/SneakerNet"
   LABEL license="https://github.com/lskatz/SneakerNet/LICENSE.md"
  
positive.code: # 
  # The command at the end t/00_env.t sets up an environment including generating contaminated reads
  # for further unit testing.
  RUN export SNVER=${SNVER:-0.19.10} && \
   echo "SNVER is $SNVER" && \
   wget https://github.com/lskatz/SneakerNet/archive/v${SNVER}.tar.gz && \
   tar -zxf v${SNVER}.tar.gz && \
  
negative.code: 
  # SneakerNet version (corresponds to github version and $VERSION)
  # TODO I'd rather set this in .gitlab-ci.yml and so here is a parameter expansion format
  #ENV SNVER=${SNVER:-0.20.0}
  
  # Get SneakerNet and make /data
  # apt deps: sendmail-base zip bsdmainutils (for column command)
  