[ubuntu] Fail fast on Docker plugin/host architecture mismatch and scope Packer -only to the exact build

[v-GeorgyPuzakov]

Description

Bug fixing / hardening

On the Ubuntu Arm64 recipe, docker-ce is installed for the machine-detected arch, but the buildx/compose plugins use the arch hardcoded in the arm64 toolset (linux-arm64 / linux-aarch64). When the arm64 recipe runs on an x86 VM you get an amd64 engine + arm64 plugins → exec format error, Tools.Tests.ps1 fails and the build aborts with no artifacts.

Trigger: #14113 put build.ubuntu-22_04-arm64.pkr.hcl in the shared images/ubuntu/templates/ dir, so a prefix glob -only "ubuntu-22_04*" also runs ubuntu-22_04-arm64 — on the shared Intel vm_size default. install-docker.sh then silently built a broken image instead of failing fast.

Changes

1. install-docker.sh — fail-fast guard: error out if a Docker plugin's toolset asset arch doesn't match the host (docker_arch), instead of installing a plugin that can't run. No change for correctly matched builds.
2. images.CI/linux-and-win/build-image.ps1 — -only "$buildName.*" instead of -only "$buildName*", so ubuntu-22_04 no longer also triggers ubuntu-22_04-arm64 (matches GenerateResourcesAndImage.ps1 and the docs).

Related issue:

• Fixes [Ubuntu 22.04 Arm64] Image build fails: docker buildx & docker compose plugins error out (exec format error), Tools.Tests.ps1 "Test run has failed", exit 1 #14302
• Related: [Ubuntu 22.04 Arm64] Image build fails: kustomize installs amd64 tarball (tar: kustomize_v*_linux_amd64.tar.gz: Cannot open) #14301

Check list

• Related issue / work item is attached
• Tests are written (if applicable)
• Documentation is updated (if applicable)
• Changes are tested and related VM images are successfully generated

[Copilot]

Pull request overview

This pull request hardens Ubuntu image generation by preventing silent creation of broken images when the Docker engine/plugin architectures don’t match, and by ensuring CI Packer builds target only the intended build(s) when templates share a directory.

Changes:

• Added a fail-fast guard in install-docker.sh to abort when the Docker CLI plugin asset architecture (from toolset) doesn’t match the host-detected docker_arch, avoiding runtime exec format error.
• Scoped Packer -only selection in images.CI/linux-and-win/build-image.ps1 from a prefix glob ($buildName*) to a build-address glob ($buildName.*), preventing unintended selection of similarly-prefixed builds (e.g., ubuntu-22_04 also triggering ubuntu-22_04-arm64).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
images/ubuntu/scripts/build/install-docker.sh	Adds an explicit architecture compatibility check to fail early on Docker CLI plugin/host mismatches.
images.CI/linux-and-win/build-image.ps1	Tightens Packer -only targeting to the intended build address pattern, avoiding accidental multi-build execution.