feat: Make machine-exec working for che-code editor in ubi-based containers

[RomanNikitenko]

What does this PR do?

• make machine-exec working for che-code editor in ubi-based containers
• see feat: Support running machine-exec in ubi-based containers eclipse-che/che-machine-exec#372
• use next tag of the machine-exec for the main branch

What issues does this PR fix?

• Machine-exec does not work for ubi-based images eclipse-che/che#23648
• https://redhat.atlassian.net/browse/CRW-11626

How to test this PR?

I used the following links to start a workspace and test machine-exec:

• ubi8-minimal:latest
• ubi9-minimal:latest
• ubi10-minimal:latest
• node:22-alpine3.22

Does this PR contain changes that override default upstream Code-OSS behavior?

• the PR contains changes in the code folder (you can skip it if your changes are placed in a che extension )
• the corresponding items were added to the CHANGELOG.md file
• rules for automatic git rebase were added to the .rebase folder

Summary by CodeRabbit

• Bug Fixes
  • Improved machine-exec startup across supported architectures and runtime assemblies.
  • Updated binary placement and launch behavior to ensure the correct executable is used.
• Chores
  • Updated the machine-exec base image to the latest build tag.
  • Simplified container initialization and removed obsolete binary setup steps.

[github-actions]

Click here to review and test in web IDE:

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[github-actions]

Pull Request images published ✨

Editor amd64: quay.io/che-incubator-pull-requests/che-code:pr-748-amd64
Editor arm64: quay.io/che-incubator-pull-requests/che-code:pr-748-arm64
Dev image: quay.io/che-incubator-pull-requests/che-code-dev:pr-748-dev-amd64

[coderabbitai]

📝 Walkthrough

Walkthrough

The Docker image now uses the next machine-exec image tag and installs binaries in architecture-specific assembly directories. The container initialization no longer prepares /checode/bin. The volume entrypoint starts ./machine-exec after selecting the runtime assembly and changing the working directory.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related PRs

• che-incubator/che-code#769: Changes the same machine-exec image layout and startup paths.
• che-incubator/che-code#779: Updates the same Dockerfile and entrypoint machine-exec setup.

Suggested reviewers: azatsarynnyy, rgrunber, vitaliy-guliy

---

Important

Pre-merge checks failed

Please resolve all errors before merging. Addressing warnings is optional.

❌ Failed checks (1 error, 1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❌ Error	The title clearly describes the change and uses imperative mood, but it is 75 characters and exceeds the 72-character limit.	Shorten the title to fewer than 72 characters while preserving the main change, for example: "feat: Fix machine-exec for che-code in UBI containers".
Rebase Rules For Upstream Changes	❓ Inconclusive	Repository clone failed, so this custom check could not run with code access.	Retry the review run. If this persists, inspect pre-merge custom-check logs for infrastructure or agent runtime failures.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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🧪 Generate unit tests (beta)

• Create PR with unit tests

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[github-actions]

Pull Request images published ✨

Editor amd64: quay.io/che-incubator-pull-requests/che-code:pr-748-amd64
Editor arm64: quay.io/che-incubator-pull-requests/che-code:pr-748-arm64
Dev image: quay.io/che-incubator-pull-requests/che-code-dev:pr-748-dev-amd64