Buildah pull with long tag needs to tab output appropriately like Podman does

[TomSweeneyRedHat]

Description

As noted by @ypu here: https://jira.coreos.com/browse/RUN-24, if you pull an image like:

buildah pull alpine@sha256:1072e499f3f655a032e88542330cf75b02e7bdf673278f701d7ba61629ee3ebe

The image tag is huge. The image appears to be usable though.

Steps to reproduce the issue:
See description.

Describe the results you received:

# buildah images
IMAGE NAME                                               IMAGE TAG            IMAGE ID             CREATED AT             SIZE
docker.io/library/alpine@sha256                          1072e499f3f655a032e88542330cf75b02e7bdf673278f701d7ba61629ee3ebe 7328f6f8b418         Jun 27, 2017 14:42     4.22 MB

Describe the results you expected:

See output of podman images

Output of buildah version:

# buildah version
Version:         1.6-dev
Go Version:      go1.10.4
Image Spec:      1.0.0
Runtime Spec:    1.0.0
CNI Spec:        0.4.0
libcni Version:  v0.7.0-alpha1
Git Commit:      de7f480a
Built:           Fri Dec 14 06:53:58 2018
OS/Arch:         linux/amd64

Output of cat /etc/*release:

# cat /etc/*release
Fedora release 28 (Twenty Eight)
NAME=Fedora
VERSION="28 (Server Edition)"
ID=fedora
VERSION_ID=28
PLATFORM_ID="platform:f28"
PRETTY_NAME="Fedora 28 (Server Edition)"
ANSI_COLOR="0;34"
CPE_NAME="cpe:/o:fedoraproject:fedora:28"
HOME_URL="https://fedoraproject.org/"
SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=28
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=28
PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
VARIANT="Server Edition"
VARIANT_ID=server
Fedora release 28 (Twenty Eight)
Fedora release 28 (Twenty Eight)

Output of uname -a:

# uname -a
Linux localhost.localdomain 4.18.17-200.fc28.x86_64 #1 SMP Mon Nov 5 18:04:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

[vrothberg]

@TomSweeneyRedHat, which version of Podman are you using? 0.12.1.1 and latest master of Podman don't transform it to none but they correctly adjust the width of the IMAGE ID column. I was checking it as printing none seems a bit unfriendly to the user as it would leave the impression that the image really has no tag.

[TomSweeneyRedHat]

Hmm, thought I was on master...

# podman version
Version:       0.12.2-dev
Go Version:    go1.10.4
Git Commit:    "94ee08109fd9179cba3d49a1d4c326810689d970-dirty"
Built:         Thu Dec 13 19:58:57 2018
OS/Arch:       linux/amd64

[TomSweeneyRedHat]

Just double checked, you're right, Podman isn't replacing with <none> any more. It just adjusts the tabs:

# podman images
REPOSITORY                        TAG                                                                IMAGE ID       CREATED         SIZE
localhost/buildahimage            latest                                                             b1c773cce75f   45 hours ago    562 MB
docker.io/library/fedora          latest                                                             8c568f104326   5 weeks ago     275 MB
docker.io/library/alpine@sha256   1072e499f3f655a032e88542330cf75b02e7bdf673278f701d7ba61629ee3ebe   7328f6f8b418   17 months ago   4.22 MB

# buildah images
IMAGE NAME                                               IMAGE TAG            IMAGE ID             CREATED AT             SIZE
docker.io/library/fedora                                 latest               8c568f104326         Nov 6, 2018 19:23      275 MB
localhost/buildahimage                                   latest               b1c773cce75f         Dec 15, 2018 14:23     562 MB
docker.io/library/alpine@sha256                          1072e499f3f655a032e88542330cf75b02e7bdf673278f701d7ba61629ee3ebe 7328f6f8b418         Jun 27, 2017 14:42     4.22 MB

[TomSweeneyRedHat]

So after looking further, let's change this to make the tabbing work as it does in Podman and leave the image id as is.

[vrothberg]

Sounds good to me :)

[rhatdan]

While in there, can you also "s/IMAGE TAG/TAG" in the heading and fix the tabs to
podman images
and
buildah images
basically give the same output.

[rhatdan]

@TomSweeneyRedHat Any progress on this?