[LP: #1912904] cloud-localds option to add SSH public key

[paride]

Originally reported by: Michael Vorburger on 2021-01-23
Original bug URL: https://bugs.launchpad.net/cloud-utils/+bug/1912904
Last Launchpad Status: Triaged
Last Launchpad Importance: Wishlist

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I've written a script which creates a cloud-init seed ISO using the current user's pubkey as user-data.

It's currently at https://github.com/archlinux/archiso/compare/master...vorburger:create_cloud-init.sh, and an (evolution of it) should land in Arch Linux sooner or later, watch https://gitlab.archlinux.org/archlinux/archiso/-/merge_requests/117.

But perhaps this is something that cloud-localds could natively support out of the box already?

What if one could just use it WITHOUT having to hand write a user-data file, and it would generate it, given a public key (perhaps with options to choose which one, by ID or file name; as suggested in the ongoing review discussion of the Arch MR)?

Would a PR contribution proposing to add an option for this potentially be welcome in this project?