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[release/6.0] Modernise Linux CI containers and native compiler discovery - #7874
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rosebyte merged 1 commit intoNov 3, 2026
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…very Backport of dotnet#7868 to release/6.0. Replace the Ubuntu 18.04 build environments with newer published images to address Azure Pipelines task-runner compatibility, without disabling Node.js EOL restrictions. - Use `ubuntu-22.04-mlnet` for Ubuntu x64 PR validation and nightly builds. - Use dotnet/runtime release/8.0's `azurelinux-3.0-net8.0-cross-arm` and `cross-arm64` images for PR and official ARM builds, with `LDFLAGS=-fuse-ld=lld` to select the bundled LLVM linker. - Add Clang 14 discovery while preserving existing compiler preferences. - Move Linux nightly hosted agents to Ubuntu 22.04 and update the associated template conditions. - Document the container choices and native compatibility constraints. The CentOS Stream 8 build images, including the official x64 native-package build, are unchanged to avoid silently raising the system-library requirements of shipped native assets. Only docs/building/unix-instructions.md conflicted: the Ubuntu 18.04 ARM Docker image reference is replaced by the new CI build containers section, and the main-only rootfsDir documentation is omitted because this branch still infers ROOTFS_DIR. (cherry picked from commit 44ede55) Co-authored-by: rosebyte <jaroslav.ruzicka@hotmail.com> Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
svick
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Nov 3, 2026
matouskozak
approved these changes
Nov 3, 2026
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## release/6.0 #7874 +/- ##
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Coverage ? 70.26%
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Files ? 1419
Lines ? 272603
Branches ? 27940
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Hits ? 191535
Misses ? 73651
Partials ? 7417
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Backport of #7868 to
release/6.0.Replace the Ubuntu 18.04 build environments with newer published images to address Azure Pipelines task-runner compatibility, without disabling Node.js EOL restrictions.
ubuntu-22.04-mlnetfor Ubuntu x64 PR validation and nightly builds.azurelinux-3.0-net8.0-cross-armandcross-arm64images for PR and official ARM builds, withLDFLAGS=-fuse-ld=lldto select the bundled LLVM linker.The CentOS Stream 8 build images, including the official x64 native-package build, are unchanged to avoid silently raising the system-library requirements of shipped native assets.