Mpestle readme update

[mpestle]

Trying to figure out how to fix the image, changes to which (outside our control) broke things yesterday. I've specified a non-existent image in this ci file this time, so hope that this will fail.

[gemini-code-assist]

Summary of Changes

Hello @mpestle, I'm Gemini Code Assist¹! 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 is a diagnostic step to understand and resolve a recent CI pipeline failure. The author has deliberately introduced a change to the .gitlab-ci.yml file, specifying a non-existent Docker image tag. This action is intended to trigger a predictable failure within the CI system, allowing the author to investigate how the pipeline reacts and identify the root cause of previous, unexpected image-related issues.

Highlights

• CI Debugging: The pull request intentionally modifies the CI configuration to debug a recent failure related to an external image change.
• Image Tag Update: The image tag in .gitlab-ci.yml has been updated to a non-existent version (nikolaik/python-nodejs:python3.14-nodejs25-slimxxxx) to force a CI failure and observe its behavior.

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[gemini-code-assist]

Code Review

This pull request appears to be a debugging step to address a CI failure caused by an upstream Docker image change. The change in .gitlab-ci.yml intentionally specifies a non-existent image tag to test the failure. My review includes a recommendation to pin the Docker image to a specific version tag or digest in the final fix to ensure build reproducibility and prevent future breakages.

[gemini-code-assist]

It's a good practice to pin your Docker images to a specific version tag or even a digest (@sha256:...) instead of relying on a floating tag like latest (which is the default when no tag is specified). This ensures your CI builds are reproducible and won't break unexpectedly due to upstream changes in the image.

I see you're currently testing with a non-existent tag. For the final fix, you should find a stable, existing tag that meets your requirements. For example, if you need Python 3.12 and a recent Node.js version, you might look for a tag like python3.12-nodejs20-slim (this is just an example, you'll need to check the available tags for the nikolaik/python-nodejs repository).