Clarify the CircleCI Base Docker image - current or intentionally pinned for stability?

Describe Request:

The review job indicates that the "most current stable release" of the CircleCI Docker image will be used if not explicitly overwritten.

https://github.com/CircleCI-Public/orb-tools-orb/blob/3643c8f3bf2d022f3477b142ffd87a5981a5666d/src/jobs/review.yml#L33

However, the job hardcodes a specific year/month published version. As of today, for example, 2023 Jan 11, it's defined as 2022.12-18.04 so it's the Dec 2022 version of Ubuntu 18.

https://github.com/CircleCI-Public/orb-tools-orb/blob/3643c8f3bf2d022f3477b142ffd87a5981a5666d/src/jobs/review.yml#L31

However, the latest is current tag in DockerHub is Jan 2023 - likely including newer OS patches.

I wasn't sure if a) it was intentional to pin this to help keep the orb-tools stable, or if in fact b) to suit the description of the job, the default tag should be changed to current-18.04 (if not current-20.04).

So wanted to open this issue for dialog with the community. The outcome would either be a trivial update to the description, or a trivial update to the tag. 😁

Examples:

https://github.com/CircleCI-Public/orb-tools-orb/blob/3643c8f3bf2d022f3477b142ffd87a5981a5666d/src/jobs/review.yml#L29-L34

Supporting Documentation Links:

https://circleci.com/developer/orbs/orb/circleci/orb-tools#jobs-review https://circleci.com/developer/images/image/cimg/base#image-tags

CircleCI-Public / orb-tools-orb