fix: use oras from AZL3 MCR image instead of imagecustomizer#8467
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hbeberman
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awesomenix,
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cameronmeissner,
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cameronmeissner
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May 7, 2026
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Pull request overview
Note
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Switches the base image pull mechanism away from the imagecustomizer container (which can’t pull from MCR) to an Azure Linux 3.0 MCR base image that installs oras at runtime and performs the pull.
Changes:
- Replace
$IMG_CUSTOMIZER_CONTAINER:$IMG_CUSTOMIZER_VERSIONusage withmcr.microsoft.com/azurelinux/base/core:3.0. - Install
orasviatdnfinside the container before runningoras pull.
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What this PR does / why we need it:
Oras within the imagecustomizer container is no longer able to pull from MCR, blocking base image fetching for OS Guard builds. This PR switches to the latest AZL 3.0 container and explicitly installs oras there to do the base image fetch.
Which issue(s) this PR fixes:
Fixes #