IAR - Confusing to see "Done: Pushed signature" when signing images that are local.

[sangee2004]

acorn version - v0.8.0-rc4+b6a95e8a

Steps to reproduce the problem:

1. Enable IAR feature (acorn install --features image-allow-rules=true)
2. Build an image - acorn build -t ghcr.io/sangee2004/mytestsignew:v0.0.3 .
3. Sign this image

 acorn image sign  ghcr.io/sangee2004/mytestsignew:v0.0.3 --key ~/santest3.key -a qatag=ok
  •  Signing Image ghcr.io/sangee2004/mytestsignew:v0.0.3 (digest: ghcr.io/sangee2004/mytestsignew@sha256:543ca38d7f6e7d57ce1fe5f79485b909988b4107a52c5af137af3d46d61b78b6) using key /Users/sangeethahariharan/santest3.key
? Enter password for private key /Users/sangeethahariharan/santest3.key: ********
  ✔  Done: Pushed signature sha256:3404345cd2e6933962efcf03b7599268705c931afbc0178872ed76f80fbdca88

Notice that the message says - "Done: Pushed signature" .

It is confusing to see this message which seems to indicate that the image and signature have been pushed to the external repo.
At this time, image and signature have NOT been pushed to the external repo. We have just generated the signature for the image and subsequent acorn push of the image results in the image and signature to be pushed.

[sangee2004]

Tested with acorn version - v0.8.0-rc4-47-g80dd7169+80dd7169

Following message is presented when signing images that are present locally:

acorn image sign  ghcr.io/sangee2004/testsignature:v0.0.3 --key ~/santest3.key -a qatag=ok
  •  Signing Image ghcr.io/sangee2004/testsignature:v0.0.3 (digest: ghcr.io/sangee2004/testsignature@sha256:b74fb09a6698f63bd6d77307fe401c8db951134198dec9fc25fa3405e8235c8b) using key /Users/sangeethahariharan/santest3.key
? Enter password for private key /Users/sangeethahariharan/santest3.key: ********
  ✔  Created signature sha256:68933d62b4483cd2ae55250cd27098cb3038e9377617c32a710898ce713bd8f8