feat: validate actions for merged-usr violations

[thesayyn]

Creates bazel validation actions for the debian13 targets to ensure that no layer violates the merged-usr conventions. This ensures both upstream debian packages and intermediate layers created by both distroless and rules_distroless is mergedusr compliant.

[gemini-code-assist[bot]]

Summary of Changes

Hello @thesayyn, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request implements a crucial validation step for OCI images built using Bazel, specifically targeting Debian 13. By integrating a new Bazel aspect, it automatically checks for violations of the merged-usr filesystem hierarchy standard within image layers. This proactive measure helps maintain consistency and prevents potential issues arising from non-compliant file structures in both base images and custom layers.

Highlights

• Merged-usr Validation: Introduced Bazel validation actions for debian13 targets to enforce merged-usr conventions, ensuring compliance for both upstream Debian packages and intermediate layers.
• New Bazel Aspect: Added a new Bazel aspect, validate_usr_symlinks, which uses bsdtar and gawk to inspect OCI image layers for merged-usr violations.
• Dependency Updates: Included gawk as a new Bazel dependency and updated bazel_skylib and rules_cc versions.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with :thumbsup: and :thumbsdown: on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

[^1]: Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution.

[github-actions[bot]]

🌳 🔄 Image Check This pull request doesn't make any changes to the images. 👍 You can check the details in the report here