anchor.diff:  
     # install apk versions of tools
     apk --no-cache add \
  +    bash \
       freetds \
  +    gawk \
  +    gzip \
       jq \
       postgresql-client \
  -    sed \
  -    gawk \
  -    gzip && \
  +    sed && \
   
     rm /etc/freetds.conf && \
   
  
positive.code: FROM ruby:2.3.0-alpine
  
  MAINTAINER John Allen <john.allen@technekes.com>
  
  RUN \
    cd /tmp && \
  
negative.code:   ln -s /bin/sed /bin/gsed && \
  
    #clean up
    # apk del build-base libtool autoconf automake glib-dev openssl && \
    rm -rf /tmp/*
  
  COPY alpine/etc/freetds.conf /etc/
  