[Bug 1960749] Re: dpkg incorrectly installs singular-doc in jammy Docker container

[Brian Murray]

** Tags removed: rls-jj-incoming
** Tags added: rls-jj-notfixing rls-kk-incoming

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Title:
  dpkg incorrectly installs singular-doc in jammy Docker container

Status in dpkg package in Ubuntu:
  Triaged
Status in dpkg package in Debian:
  New

Bug description:
  Also reported on https://github.com/tianon/docker-brew-ubuntu-
  core/issues/230

  Using official Jammy image in Docker (macOS) and Podman (Fedora).
  In both cases, using CLI in the image and running

  apt install singular-doc
  dpkg -V singular-doc
  reports a lot of missing files. In fact, the only present files are dangling links to missing files in the package.
  (EDIT: the latter should not be there, it contradics `exclude` policy for dpkg installed in the Docker image)

  The package itself is not broken - extracting it in Jammy not in Docker/Podman (say, in an lxc container) works.
  And extracting it in Debian/bookworm CLI run in Docker works too.

  As well, the same behaviour is observed using the corresponding
  singular-doc_4.2.1-p3+ds-1_all.deb file, and installing it using dpkg
  -i. This points to dpkg as the culprit.

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