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chore(deps): update mirror.gcr.io/library/ubuntu docker tag to v26#14344

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chore(deps): update mirror.gcr.io/library/ubuntu docker tag to v26#14344
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renovate-bot:renovate/mirror.gcr.io-library-ubuntu-26.x

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This PR contains the following updates:

Package Type Update Change
mirror.gcr.io/library/ubuntu final major 24.0426.04

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@renovate-bot renovate-bot requested review from a team as code owners June 22, 2026 03:46
@trusted-contributions-gcf trusted-contributions-gcf Bot added kokoro:force-run Add this label to force Kokoro to re-run the tests. owlbot:run Add this label to trigger the Owlbot post processor. labels Jun 22, 2026
@product-auto-label product-auto-label Bot added the samples Issues that are directly related to samples. label Jun 22, 2026

@gemini-code-assist gemini-code-assist Bot left a comment

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Code Review

This pull request attempts to upgrade the base Docker image from Ubuntu 24.04 to Ubuntu 26.04. However, feedback indicates that Ubuntu 26.04 is not yet a stable release, and upgrading will cause build failures because third-party repositories do not yet support it. It is recommended to revert this change and stick to the stable Ubuntu 24.04 LTS version.

Comment thread .kokoro/docker/Dockerfile
# We want to use LTS ubuntu from our mirror because dockerhub has a
# rate limit.
FROM mirror.gcr.io/library/ubuntu:24.04
FROM mirror.gcr.io/library/ubuntu:26.04

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high

Upgrading to Ubuntu 26.04 is premature as it is not yet a stable release (scheduled for April 2026). Attempting to build this Dockerfile with Ubuntu 26.04 will fail because third-party repositories (such as Docker, Bazel, and Google Chrome) do not yet have package distributions or stable releases for this version. Please revert this change and stick to the current LTS version (Ubuntu 24.04).

FROM mirror.gcr.io/library/ubuntu:24.04

@kokoro-team kokoro-team removed the kokoro:force-run Add this label to force Kokoro to re-run the tests. label Jun 22, 2026
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