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Fix arm64 Linux runner OS detection#462

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jtdowney wants to merge 1 commit into
erlef:mainfrom
jtdowney:fix-ubuntu-arm
Open

Fix arm64 Linux runner OS detection#462
jtdowney wants to merge 1 commit into
erlef:mainfrom
jtdowney:fix-ubuntu-arm

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@jtdowney

@jtdowney jtdowney commented Jun 1, 2026

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actions/runner-images#14113 gave arm64 Ubuntu images distinct ImageOS values (e.g. ubuntu24-arm64 instead of ubuntu24), which don't appear in the ImageOSToContainer table, causing setup to fail on ubuntu-*-arm runners.

This PR normalizes ImageOS by stripping a trailing -arm64 suffix before the lookup, so arm64 variants resolve to the same OS container as their x86 counterparts, as it previously did.

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