podman-remote untag by SHA: loses tag

[edsantiago]

Untagging an image by SHA works fine with podman local. With remote, the image tag is lost.

Reproducer:

#!/bin/bash

# Invoke with "-remote" (one dash) to use podman-remote
PODMAN=bin/podman$1
IMAGE=quay.io/libpod/testimage:20210610

$PODMAN rmi -a &>/dev/null
$PODMAN pull -q $IMAGE
digest=$($PODMAN inspect --format '{{.Digest}}' $IMAGE)
$PODMAN pull -q $IMAGE@$digest
$PODMAN untag $IMAGE $IMAGE@$digest
$PODMAN images -a

Results:

$ ./repro
9f9ec7f2fdef9168f74e9d057f307955db14d782cff22ded51d277d74798cb2f
9f9ec7f2fdef9168f74e9d057f307955db14d782cff22ded51d277d74798cb2f
REPOSITORY                TAG         IMAGE ID      CREATED       SIZE
quay.io/libpod/testimage  20210610    9f9ec7f2fdef  3 months ago  7.99 MB
$ ./repro -remote
9f9ec7f2fdef9168f74e9d057f307955db14d782cff22ded51d277d74798cb2f
9f9ec7f2fdef9168f74e9d057f307955db14d782cff22ded51d277d74798cb2f
REPOSITORY                TAG         IMAGE ID      CREATED       SIZE
quay.io/libpod/testimage  <none>      9f9ec7f2fdef  3 months ago  7.99 MB
                          ^^^^^^ THIS IS BAD

[vrothberg]

Opened #11651