[docs] codex-universal README runtime list has drifted from the Dockerfile

Start with the runtime table and architecture note in README.md, then compare them with the Node.js/Bun, Java, PHP, and verification sections of the Dockerfile at the cited commit. Update the README so its versions, arm64 Java note, and spelling match the Dockerfile; done means all listed mismatches are corrected.

What is the type of issue?

Documentation is incorrect

What is the issue?

What is the type of issue?

• Documentation is incorrect
• Example code is not working

What is the issue?

The runtime information in the openai/codex-universal README has drifted
from the current Dockerfile. I checked the fetched main commit
47f4f0eb5337083e2f610db0d15558932cb4901d.

Current mismatches:

• The README says "OpenJDK 10 is not available on amd64". The Dockerfile
  instead excludes OpenJDK 11 on arm64, includes 11 on amd64, and documents
  that distinction in its adjacent comment.
• The README lists Node.js 18, 20, and 22. The Dockerfile installs and verifies
  Node.js 24 as well.
• The README lists PHP 8.4, 8.3, and 8.2. The Dockerfile installs and verifies
  PHP 8.5 as well.
• The README lists Bun 1.2.10. The Dockerfile sets Bun 1.2.14.
• The introduction contains the typo cutomize.

Source links at the frozen commit:

• README architecture note and runtime table
• Node and Bun versions
• Architecture-specific Java versions
• PHP versions
• Versions exercised by the image verification step

Suggested change

Please update the README to match the Dockerfile:

• describe OpenJDK 11 as unavailable on arm64;
• add Node.js 24 and PHP 8.5;
• change Bun to 1.2.14; and
• fix cutomize to customize.

A lightweight documentation check that compares the documented runtime list
with the Docker build/verification arguments could prevent the table from
drifting again.

Duplicate check

I searched all-state Issues and PRs in both openai/codex and
openai/codex-universal using the runtime names, versions, README paths, and
the codex-universal repository name.

• openai/codex-universal PR #75 proposed only the older Bun documentation
  update and was closed as stale without merging.
• PR #53 proposed only the spelling correction and was closed as stale without
  merging.
• PR #55 included the same spelling correction plus a MitM proxy note and was
  closed without merging.
• I did not find a current Issue or active PR covering the combined README
  drift above.

This is being filed in the main Codex tracker because the
codex-universal contribution guidance and a maintainer comment direct bug
reports and feature requests there.

Where did you find it?

• https://github.com/openai/codex-universal/blob/47f4f0eb5337083e2f610db0d15558932cb4901d/README.md
• https://github.com/openai/codex-universal/blob/47f4f0eb5337083e2f610db0d15558932cb4901d/Dockerfile