feat(atp): build directly from atp source (2/2)

[AtomHare]

This Draft/PR adds support to build atp and export it as a docker layer image. So it can be easily layered on bazzite-dx images.
It uses directly the install process recommended by ATP, so it means less issues in case of an update.

It needs to be discussed but some config files can probably be removed from this repo unless it's wanted to override some default settings for atp.

it may be wanted to remove the default wayland sessions like kinoite7 is doing. => implemented

[bominic27644]

This seems like a better approach since it uses the upstream install script. This means that build scripts would not need updating for every change in the upstream repo.

[ledif]

It looks like the workflow is failing because of cosign. Try cherry-picking this commit that avoids signing for PRs: 211db0c.

[AtomHare]

I will split this PR in 2 parts. The first one will only contain everything required to build the apt-common layer.
The other one (this one) will contain the rest. That way it will be easier to test if the build works without using workarounds.

[AtomHare]

This PR is more concise now, it adds the building blocks to build a new winblues7 beta. That way we can iterate quickly using VMs and bare metal very soon I hope.

Scripts and configs are cherry picked, that way we can remove unneeded configs when the beta is successful.

[Copilot]

Pull request overview

Adds “beta” build variants for Winblues 7 images that layer in ATP content from the atp-common OCI image, and introduces a dedicated CI workflow to build/push those beta variants.

Changes:

• Added recipe-beta.yml and recipe-nvidia-beta.yml that copy ATP-provided /system_files from ghcr.io/winblues/atp-common and remove the default Wayland Plasma session.
• Added .github/workflows/build-beta.yml to build the beta recipes (PR + manual trigger) with a recipe matrix.
• Updated build workflow concurrency grouping and removed the obsolete upstream commit reference workflow.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
recipes/recipe-beta.yml	New beta recipe that layers atp-common content and applies Winblues overlays/scripts.
recipes/recipe-nvidia-beta.yml	New NVIDIA beta recipe equivalent to the non-NVIDIA beta recipe.
.github/workflows/upstream-commit-info.yml	Removed scheduled workflow that maintained an upstream commit reference branch/file.
.github/workflows/build.yml	Adjusted concurrency group key to better separate events/refs.
.github/workflows/build-beta.yml	New CI workflow to build the beta recipes via matrix on PR/workflow_dispatch.

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[ledif]

LGTM. Thanks for pushing this through!