Migrate away from deprecated heroku/builder-classic:22 CNB builder image

[edmorley]

Hi 👋

This project uses Heroku's heroku/builder-classic:22 CNB builder image:

engine/src/build_platform/local_docker.rs

Lines 30 to 31 in 056c195

	const BUILDPACKS_BUILDERS: [&str; 1] = [
	"heroku/builder-classic:22",

We have deprecated this builder image as of heroku/cnb-builder-images#429.

Please migrate to heroku/builder:22 or heroku/builder:20, to continue to receive security updates, and to avoid disruption when the build time deprecation warning is upgraded to an error in the future.

More information on the difference between the various builder images can be seen here:
https://github.com/heroku/cnb-builder-images#heroku-cnb-builder-images

The repo URL for the builder images has also changed, see #739.

[edmorley]

Gentle nudge that builds using these images will start erroring in the future, plus the underlying images themselves will stop receiving security updates.

[edmorley]

@erebe @benjaminch ^

[edmorley]

Gentle nudge that builds using these images will start erroring in the future, plus the underlying images themselves will stop receiving security updates.

This will be happening within the next couple of weeks in heroku/cnb-builder-images#474. We'll be adding an env var override for the errors, but I strongly recommend you switch from heroku/builder-classic:22 to heroku/builder:* as soon as possible.

[benjaminch]

Hey @edmorley, it should be done => https://github.com/search?q=repo%3AQovery%2Fengine%20heroku%2Fbuilder%3A&type=code

[edmorley]

@benjaminch Ah thank you, I see it happened in:
9323ce1#diff-1d6d87da9c944d92a413b97b36c22686cf328b99b62adacd3a86e2022b4df409R32

Since there was no PR callback reference visible in the history of this issue I hadn't seen the change.