Noble migration and fixes#4

Merged

phaus merged 4 commits intomasterfrom

noble-migration-and-fixes

Apr 16, 2026

Commits on Apr 16, 2026

host: add TUF-aware layer download, resolv.conf symlink fix, and bin-overrides
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committed
builder: migrate base images from Ubuntu 18.04/16.04 to Ubuntu 24.04 LTS (Noble)
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mariadb: migrate from innobackupex to mariabackup for MariaDB 10.11 LTS
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builder: prefer cloud image download over debootstrap for ubuntu-noble
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committed