anchor.diff: -# MG-RAST dockerfiles
  +# MG-RAST pipeline Dockerfile
   
   FROM debian
   MAINTAINER The MG-RAST team
  
positive.code: 	python-sphinx \
  	unzip \
  	wget \
  	curl
  
  #### install BLAT from src
  
negative.code:     && make install \
      && make clean \
      && cd /root ; rm -rf sortmerna-2* 2*.tar.gz
  
  ### install skewer
  RUN cd /root \
  