include platform and creation date listing image

[ndeloof]

What I did
Added PLATFORM and CREATED columns in docker compose images output

decoupled from getImageSummaries used by lifecycle methods, as having a ImageSummary#ContainerName attribute is confusing

$ docker compose images
CONTAINER           REPOSITORY          TAG                 PLATFORM            IMAGE ID            SIZE                CREATED
truc-hello-1        truc-hello          latest              linux/arm64         00dd0d06b496        87.9MB              2 hours ago

Related issue

(not mandatory) A picture of a cute animal, if possible in relation to what you did

[thaJeztah]

Slightly wondering about the PLATFORM here - what does the IMAGE ID refer to? Is that referring to the variant of the image? Considering multi-platform images and such.

cc @vvoland

[thaJeztah]

wondering if it would make more sense to show a platform column for the list of containers; something we'll be adding as an optional column for docker ps; see docker/cli#6042

[ndeloof]

IMAGE ID is the one returned by ImageInspect

[thaJeztah]

Yeah, so by default, docker image inspect show the ID of the manifest-index;

docker image inspect --format '{{.ID}}' alpine
sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c

docker buildx imagetools inspect alpine | head -n3
Name:      docker.io/library/alpine:latest
MediaType: application/vnd.oci.image.index.v1+json
Digest:    sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c

docker image ls --tree
IMAGE                   ID             DISK USAGE   CONTENT SIZE   EXTRA
alpine:latest           a8560b36e8b8         25MB         7.64MB
├─ linux/amd64          1c4eef651f65       12.1MB         3.64MB
├─ linux/arm/v6         903bfe2ae994           0B             0B
├─ linux/arm/v7         9c2d245b3c01           0B             0B
├─ linux/arm64/v8       757d680068d7       12.8MB         3.99MB
├─ linux/386            2436f2b3b7d2           0B             0B
├─ linux/ppc64le        9ed53fd3b831           0B             0B
├─ linux/riscv64        1de5eb4a9a67           0B             0B
└─ linux/s390x          fe0dcdd1f783           0B             0B

So, technically adding a platform to that is not correct, as the platform would be for the image manifests underneath; using docker image inspect and specifying a platform will show a different ID for that reason;

docker image inspect --platform=linux/amd64 --format '{{.ID}}' alpine
sha256:1c4eef651f65e2f7daee7ee785882ac164b02b78fb74503052a26dc061c90474

docker buildx imagetools inspect alpine | grep -A3 1c4eef651f65e2f7daee7ee785882ac164b02b78fb74503052a26dc061c90474 | head -n3
  Name:        docker.io/library/alpine:latest@sha256:1c4eef651f65e2f7daee7ee785882ac164b02b78fb74503052a26dc061c90474
  MediaType:   application/vnd.oci.image.manifest.v1+json
  Platform:    linux/amd64

docker image inspect --platform=linux/arm64 --format '{{.ID}}' alpine
sha256:757d680068d77be46fd1ea20fb21db16f150468c5e7079a08a2e4705aec096ac

docker buildx imagetools inspect alpine | grep -A3 757d680068d77be46fd1ea20fb21db16f150468c5e7079a08a2e4705aec096ac | head -n3
  Name:        docker.io/library/alpine:latest@sha256:757d680068d77be46fd1ea20fb21db16f150468c5e7079a08a2e4705aec096ac
  MediaType:   application/vnd.oci.image.manifest.v1+json
  Platform:    linux/arm64/v8

[ndeloof]

docker image inspect show the ID of the manifest-index

not when ran with --platform, which is what we show here as image ID

$ docker compose images
CONTAINER            REPOSITORY          TAG                 PLATFORM            IMAGE ID            SIZE                CREATED
truc-hello-amd64-1   debian              latest              linux/amd64         6bc30d909583        48.5MB              4 minutes ago
truc-hello-arm64-1   debian              latest              linux/arm64/v8      f245326d62b3        48.3MB              4 minutes ago

[thaJeztah]

Right, but neither 6bc30d909583 nor f245326d62b3 are tagged as debian:latest - the manifest index is tagged, and the underlying images are not.

That's basically the reason why we opted not to show platform in docker image ls, and only show it with the --tree view

[ndeloof]

ok, fixed to only display the top-level tagged image ID

$ docker compose images
CONTAINER            REPOSITORY          TAG                 PLATFORM            IMAGE ID            SIZE                CREATED
truc-hello-amd64-1   debian              latest              linux/amd64         264982ff4d18        48.5MB              32 minutes ago
truc-hello-arm64-1   debian              latest              linux/arm64/v8      264982ff4d18        48.3MB              32 minutes ago

Maybe you should close moby/moby#49995 if there's no plan to support this ?

[glours]

LGTM and tests ok 👍