anchor.diff:          bind-tools \
           file \
           git \
  +        git-email \
  +        git-perl \
           go \
           grep \
           less \
  
positive.code: FROM alpine:3.7
  
  RUN apk add --no-cache \
          apache2-utils \
  
negative.code:  && curl \
          --location \
          --url https://github.com/gliderlabs/sigil/releases/download/v0.4.0/sigil_0.4.0_Linux_x86_64.tgz | tar -zxC /usr/local/bin \
   && rm -rf /tmp/*
  
  # RUN version="$(curl --url https://github.com/git-lfs/git-lfs/releases/latest -I -s | grep -i 'location:' | head -n 1 | sed -En 's|.*tag/v([0-9\.]+).*|\1|p')" \
  