anchor.diff:          git \
           gosu \
           kmod \
  -        libvirt-bin \
  +        libvirt-clients \
           openssh-client \
           qemu-utils \
           rsync \
  
positive.code: # allow caching of packages for build
  RUN rm -f /etc/apt/apt.conf.d/docker-clean; echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache
  RUN sed -i '/deb-src/s/^# //' /etc/apt/sources.list
  RUN --mount=type=cache,target=/var/cache/apt --mount=type=cache,target=/var/lib/apt \
      apt update \
      && apt build-dep -y \
          vagrant \
  
negative.code: ARG VAGRANT_VERSION=2.3.0
  
  
  FROM ubuntu:jammy as base
  
  RUN apt update \
      && apt install -y --no-install-recommends \
  