[Bug 1998229] Re: Adding metadata file into OCI images

[Cristovao Cordeiro]

Thanks Brian. Samir is OOO so I'll cover the verification steps.

The test plan from this bug's summary is only applicable when this package is released into -
updates.
So here's my current test plan to verify the -proposed pocket:

1. git clone https://github.com/ubuntu-bartenders/ubuntu-old-fashioned
2. cd ubuntu-old-fashioned/scripts/ubuntu- bartender
3.
    for SERIES in bionic focal jammy kinetic
    do
        ./ubuntu-bartender --build-provider multipass \
            --livecd-rootfs-repo https://git.launchpad.net/ubuntu/+source/livecd-rootfs \
            --livecd-rootfs-branch ubuntu/$SERIES-proposed -- --project ubuntu-oci --series $SERIES
    done


Each of the above bartender calls will produce a tarball with a different random name. Let's say
(for the sake of readability in this test plan) that those are "$SERIES-ubuntu-on-the-rocks.tar.gz":

4.
    for SERIES in bionic focal jammy kinetic
    do
      mkdir $SERIES-build
      tar -xf $SERIES-ubuntu-on-the-rocks.tar.gz -C $SERIES-build
      sudo mount $SERIES-build/build.output/livecd.ubuntu-oci.ext4 /mnt
      grep serial /mnt/etc/cloud/build. info
      sudo umount /mnt
    done

I've tested this, and I could see the /etc/cloud/build.info file (with the "serial" content) on
bionic, focal, jammy and kinetic.
This fixes the bug for me.

Thanks!
P.S> I don't think I have the right to "change the tag from verification-needed-bionic to verification-done-bionic".

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https://bugs.launchpad.net/bugs/1998229

Title:
  Adding metadata file into OCI images

Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Bionic:
  Fix Committed
Status in livecd-rootfs source package in Focal:
  Fix Committed
Status in livecd-rootfs source package in Jammy:
  Fix Committed
Status in livecd-rootfs source package in Kinetic:
  Fix Committed

Bug description:
  [ Impact ]

  * The existing Ubuntu container images are being built and published
  without any metadata information. This will introduce a new cloud-like
  path and metadata file, including the image's serial number within
  (which is useful for users to pinpoint a specific revision of the image).

  [ Test Plan ]

  * Run (for any of the affected series):

     $ docker run public.ecr.aws/ubuntu/ubuntu:jammy grep serial
  /etc/cloud/build.info || echo "Image metadata not found"

  * Currently, the output will be

     grep: /etc/cloud/build.info: No such file or directory
     Image metadata not found

  * After the release, I'll trigger the Ubuntu container image
  CI/CD pipelines, and re-run the Docker command from above.

  * The output shall then be similar to:

     serial: 20221125

  [ Where problems could occur ]

  Given that we're adding new content to the filesystem, there's little
  room for regression. A potential pitfall could be the future introduction
  of /etc/cloud/(...) into the minimal filesystem, which would then
  potentially end up being altered.

  [ Other Info ]

  Here the PR I have made :

  https://code.launchpad.net/~samirakarioh/livecd-rootfs/+git/livecd-rootfs/+merge/433431
  https://code.launchpad.net/~samirakarioh/livecd-rootfs/+git/livecd-rootfs/+merge/433432
  https://code.launchpad.net/~samirakarioh/livecd-rootfs/+git/livecd-rootfs/+merge/433433
  https://code.launchpad.net/~samirakarioh/livecd-rootfs/+git/livecd-rootfs/+merge/433572

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