fix(dev-env): disallow running dev-env as root

[sjinks]

Description

This PR adds a check that dev env commands are not running under the root user. Using the root user creates numerous issues (e.g., permissions, user mapping, etc), often resulting in broken environments.

NB: we may want to improve the wording.

Ref: 198752-z

Pull request checklist

• Update SETUP.md with any new environmental variables.
• Update the documentation.
• Manually test the relevant changes.
• Follow the pull request checklist
• Add/update automated tests as needed.

New release checklist

• Automated tests pass.
• The Preparing for release checklist is completed.

Steps to Test

Check out the PR, build vip-cli, and run (this is a Linux version; I am not sure how to do that on a Mac):

sudo -E --preserve-env=PATH $(which vip) dev-env ls

The expected result is

This script should not be run as root. Exiting.

Copilot reviewed 1 out of 1 changed files in this pull request and generated no comments.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details

Scanned Files

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud