anchor.diff:  
   # We use SQLite as our DB. Force install "sqlite3" manually since it's an optional dependency of "ghost"
   RUN set -eux                                                && \
  -    apk update && apk upgrade && apk add su-exec            && \
  +    apk update && apk add su-exec                           && \
       echo "---             S P A C E R             ---"      && \
       npm install --loglevel=error -g ghost-cli               && \
       echo "---             S P A C E R             ---"      && \
  
positive.code: ### ### ### ### ### ### ### ### ###
  # Final image
  
  FROM node:6-alpine
  LABEL maintainer="Marco Mornati <marco@mornati.net>"
  
  ENV GHOST_VERSION="1.20.3"                                  \
  
negative.code: # Builder layer
  # Update Ghost + Node version at lines: 5-7 and 45-48
  
  FROM node:8.9-alpine as ghost-builder
  
  ENV GHOST_VERSION="1.21.1"                                  \
      GHOST_INSTALL="/var/lib/ghost"                          \
  