anchor.diff:        requests_oauthlib \
         urllib3 \
         dropbox==6.9.0 \
  -      fasteners && \
  +      fasteners \
  +      duplicity && \
       mkdir -p /etc/volumerize /volumerize-cache /opt/volumerize && \
       touch /etc/volumerize/remove-all-inc-of-but-n-full /etc/volumerize/remove-all-but-n-full /etc/volumerize/startContainers /etc/volumerize/stopContainers \
         /etc/volumerize/backup /etc/volumerize/backupIncremental /etc/volumerize/backupFull /etc/volumerize/restore \
  
positive.code: FROM alpine:edge
  MAINTAINER Steffen Bleul <sbl@blacklabelops.com>
  
  ARG DUPLICITY_VERSION=latest
  
negative.code:       musl-dev \
        rsync \
        lftp \
        py-cryptography \
        librsync \
        librsync-dev \
        python2-dev \
        py-pip && \
      # Install Duplicity
      #if  [ "${DUPLICITY_VERSION}" = "latest" ]; \
      #  then apk add duplicity ; \
      #  else apk add "duplicity=${DUPLICITY_VERSION}" ; \
      # fi && \
      pip install --upgrade pip setuptools duplicity && \
      pip install \
        PyDrive \
        chardet \
  