[Bug 2037905] Please test proposed package

[Andreas Hasenack]

Hello Frantz, or anyone else affected,

Accepted docker.io-app into noble-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/docker.io-
app/28.2.2-0ubuntu1~24.04.1 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
noble to verification-done-noble. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-noble. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: docker.io-app (Ubuntu Jammy)
       Status: New => Fix Committed

** Tags added: verification-needed-jammy

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https://bugs.launchpad.net/bugs/2037905

Title:
  package docker.io (not installed) failed to install/upgrade: tentative
  de remplacement de « /usr/bin/docker », qui appartient aussi au paquet
  podman-docker 4:4.6.2-0ubuntu22.04+obs81.12

Status in apt package in Ubuntu:
  Won't Fix
Status in docker.io-app package in Ubuntu:
  Fix Released
Status in docker.io-app source package in Jammy:
  Fix Committed
Status in docker.io-app source package in Noble:
  Fix Committed
Status in docker.io-app source package in Oracular:
  Won't Fix
Status in docker.io-app source package in Plucky:
  Fix Committed

Bug description:
  [ Impact ]

  Both docker.io-app and podman-docker packages ship a /usr/bin/docker
  file. Docker.io does not include a conflicts relation with podman-
  docker, but podman-docker includes that relation (Conflicts/Replaces
  docker.io/docker-cli).

  apt/apt-get behaves correctly in all supported releases when
  installing one package over the other. Therefore, there is no greater
  impact here unless the user (as happened with the original report)
  decides to use a custom podman-docker package build without the
  Conflics/Replaces relation.

  In other words, this bug does not really affect regular usage of these
  packages for stable releases. Nevertheless, we are backporting this
  fix to plucky/noble/jammy with the next container stack backport batch
  for correctness.

  [ Test Plan ]

  Install docker.io.
  Install podman-docker.
  Verify that the package was correctly installed and docker.io was removed.

  Install podman-docker
  Install docker.io
  Verify that the package was correctly installed and podman-docker was removed.

  [ Where problems could occur ]

  This adds a new Conflicts/Replaces relation in the package. Unless new
  packages providing the conflicting capabilites in the archive (and
  only in the case the new capabilities are not really conflicting),
  regressions should be checked elsewhere first. Otherwise, reverting
  this change should be straightforward and should be generally OK given
  the other conflicting counterpart already carries the relation.

  [ Other Info ]

  As mentioned by Julian in the comments, the new apt solver will
  protect manually installed packages against removals due to
  Conflicts/Breaks (when not using apt-get). Users using the new solver
  will still face an issue when trying to replace one of the packages,
  but the error message should include a good explanation of the
  conflict. Users should either remove the conflicting package in the
  same install operation (using a "-") or use apt-get. ATM, this only
  applies to Ubuntu >= 25.10

  [ Original Message ]

  ProblemType: Package
  DistroRelease: Ubuntu 22.04
  Package: docker.io (not installed)
  ProcVersionSignature: Ubuntu 6.2.0-33.33~22.04.1-generic 6.2.16
  Uname: Linux 6.2.0-33-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: amd64
  CasperMD5CheckResult: pass
  Date: Sun Sep 24 18:01:40 2023
  ErrorMessage: tentative de remplacement de « /usr/bin/docker », qui appartient aussi au paquet podman-docker 4:4.6.2-0ubuntu22.04+obs81.12
  InstallationDate: Installed on 2022-11-19 (316 days ago)
  InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
  Python3Details: /usr/bin/python3.10, Python 3.10.12, python3-minimal, 3.10.6-1~22.04
  PythonDetails: /usr/bin/python3.10, Python 3.10.12, python-is-python3, 3.9.2-2
  RelatedPackageVersions:
   dpkg 1.21.1ubuntu2.2
   apt  2.4.10
  SourcePackage: docker.io-app
  Title: package docker.io (not installed) failed to install/upgrade: tentative de remplacement de « /usr/bin/docker », qui appartient aussi au paquet podman-docker 4:4.6.2-0ubuntu22.04+obs81.12
  UpgradeStatus: No upgrade log present (probably fresh install)

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