CI tests.yml: Deploy the retired Docker image

[sjackman]

Merge this PR after merging PR Homebrew/homebrew-core#108590

• Use Ubuntu 22.04 to build bottles homebrew-core#108590

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• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same change?
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• Update bottling Linux distribution to Ubuntu 22.04 #13619

[BrewTestBot]

Review period will end on 2022-09-06 at 15:59:38 UTC.

[BrewTestBot]

Review period skipped due to critical label.

[carlocab]

Seems weird to do this every time when it's something that only needs to be done once.

[sjackman]

We can revert this PR immediately after it's merged.

[MikeMcQuaid]

How about guarding whatever we go with to the 3.6.0 tag? Would like to have the code kept around so we have it for the next Ubuntu LTS upgrade. Alternatively, could just add it to the docs.

[carlocab]

Seems better suited for its own workflow that is done with workflow_dispatch, but I'm not strongly opposed to this.

[Bo98]

Tested this out. The message is never displayed in GitHub Actions: https://github.com/Bo98/brew-image-retirement-test/runs/8198518314?check_suite_focus=true

I think what we would have to do is keep a Ubuntu 16.04 base (for bash etc.) and have a stub brew script that prints the message. (This can be addition to the CMD/ENTRYPOINT.)

If we'd like a deprecation period, which I would encourage, I have played with that a bit. Looks like this: https://github.com/Bo98/brew-image-retirement-test/runs/8199992071?check_suite_focus=true (ignore the permission error). Could be tweaked to be less spammy but seems to work. Also appears in the summary: https://github.com/Bo98/brew-image-retirement-test/actions/runs/2997682091, which is also where GitHub puts their own deprecation messages. Code: Bo98@e364272 + a .docker-deprecate file planted in the Docker image.

[carlocab]

Also appears in the summary: https://github.com/Bo98/brew-image-retirement-test/actions/runs/2997682091, which is also where GitHub puts their own deprecation messages.

I like this.

[Bo98]

#13819 shows what we can do for a crossover deprecation period.

What we do for retirement will be slightly different. I'll open a second PR for that.