anchor.diff:  ARG VAGRANT_VERSION=2.3.0
   
   
  -FROM ubuntu:bionic as base
  +FROM ubuntu:jammy as base
   
   RUN apt update \
       && apt install -y --no-install-recommends \
  
positive.code:         git \
          gosu \
          kmod \
          libvirt-bin \
          openssh-client \
          qemu-utils \
          rsync \
  
negative.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=id=apt-cache-v1,type=cache,target=/var/cache/apt --mount=id=apt-lib-v1,type=cache,target=/var/lib/apt \
      apt update \
      && apt build-dep -y \
          vagrant \
  