gpg: Can't check signature: No public key

[Howun]

Description

Error when downloading package from swift:

==> azure-arm.build_vhd: gpg: signature made Mon Sep 16 21:18:59 2024 UTC
==> azure-arm.build_vhd: gpg: using RSA key EF80A866B47A981F
==> azure-arm.build_vhd: gpg: Can't check signature: No public key

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 20.04
• Ubuntu 22.04
• Ubuntu 24.04
• macOS 12
• macOS 13
• macOS 13 Arm64
• macOS 14
• macOS 14 Arm64
• Windows Server 2019
• Windows Server 2022

Image version and build link

N/A private build

Is it regression?

Yes, last worked 16th September 2024

Expected behavior

All tests passed successfully and build successfully for Ubuntu 20.04 using the build code in this repo.

Actual behavior

Our pipeline that builds the Ubuntu 20.04 image using the runner images code is failing when downloading package from swift

Repro steps

Run packer build using the latest code in this repo for Ubuntu 20.04

[pretkowski]

I am having the same issue

[kishorekumar-anchala]

HI @Howun ,

the issue got fixed under this PR.