check-remote-image-existence.yml: check remote image existence in templates

[norio-nomura]

I think it should be scheduled to run periodically with cron. What do you think?

Thanks,

[norio-nomura]

4 image locations returns 404: https://github.com/lima-vm/lima/actions/runs/10092040673/job/27904864692?pr=2513#step:3:5

Error: response: 404 for https://repo.almalinux.org/almalinux/8.9/cloud/x86_64/images/AlmaLinux-8-GenericCloud-8.9-20231128.x86_64.qcow2
Error: response: 404 for https://repo.almalinux.org/almalinux/8.9/cloud/aarch64/images/AlmaLinux-8-GenericCloud-8.9-20231128.aarch64.qcow2
Error: response: 404 for https://cloud-images.ubuntu.com/releases/22.04/release-20220902/ubuntu-22.04-server-cloudimg-amd64.img
Error: response: 404 for https://cloud-images.ubuntu.com/releases/22.04/release-20220902/ubuntu-22.04-server-cloudimg-arm64.img

annotations can be checked here: https://github.com/lima-vm/lima/pull/2513/files

[norio-nomura]

In this PR, I also believe the following should be decided:

• What to do if a 404 image is found.
  • Should we create an issue? What should the content be? What if it's not fixed by the next cron job?
• What is the appropriate cron schedule?

[afbjorklund]

For AlmaLinux, those old releases are moved to a different URL.

https://repo.almalinux.org/almalinux/8.9/README.txt

https://vault.almalinux.org/8.9/cloud/x86_64/images/

Users are not supposed to configure the minor releases directly.

it is supposed to upgrade to install 8.10 instead of 8.9:

=> https://repo.almalinux.org/almalinux/8.10/cloud/