Build system#1

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voutuk wants to merge 3 commits intobuzzy:masterfrom

voutuk:build-system

Commits on Dec 10, 2025

fix(mirrors): replace broken outdated URLs with reliable upstream sources
voutuk
committed
feat(build): add Dockerfile-based build workflow and update README
voutuk
committed
ci: add cloud-build workflow for automated sysroot builds
voutuk
committed