ci/images: drop the LXC images
Last use case was dropped in 36b08eb3, and I don't expect we'd use this in future anymore.
The "bullseye" in README was clearly a typo (it's the codename for 11).
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Last use case was dropped in 36b08eb3, and I don't expect we'd use this in future anymore.
The "bullseye" in README was clearly a typo (it's the codename for 11).