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Ci debug#2

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BronzeDeer wants to merge 7 commits intomainfrom
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Ci debug#2
BronzeDeer wants to merge 7 commits intomainfrom
ci-debug

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Fixes # in case of a bug fix, this should point to a bug and any other related issue(s)

Description

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

  • Includes unit tests
  • Adds integration tests if needed.

See the contribution guide for more details.

Reviewer Notes

  • The code flow looks good.
  • Unit tests and or integration tests added.

Release Notes

Describe any changes here so maintainer can include it in the release notes, or delete this block.

Examples of user facing changes:
- kaniko adds a new flag `--registry-repo` to override registry

- Adapted error comparison according to linter recommendation
- Disabled noctx linting for http request where canceling makes no sense
- Disabled nilerror linting where nil error is returned on purpose
- Disabled makezero linter where slice is explicitly deepcopied
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The remaining failing test seems to be related to it being the only container using an OCI manifest rather than a dockerv2 manifest, which container-diff seems to not handle correctly. After some investigation this might be connected to a regression in the underlying docker libraries used to pull moby/moby#39727 (comment)

Previously the regex only allowed the copyright notice to contain the
years 2018,2019,2020,2021, or 2022. This commit widens to regex to
20\d\d allowing any year in the range [2000-2099]
The existing setup for minikube is very complicated, replicating most of
the setup steps for a full kubernetes cluster in an only partially
supported minikube configuration (driver=none). Furthermore the existing
setup has been broken for sometime, likely, at least in part due to the
changes to CNI and CRI in recent kubernetes versions.

Since what we actually need is only a running Kubernetes cluster on the
node and access to a registry on localhost:5000, we can switch the
extremely complicated minikube setup for a lightweight cluster using
k3s. Minikube came with a default addon for running a registry on every
node, but the same is not the case for k3s, instead we make use of the
package helm controller and its HelmChart CR to deploy twuni/docker-registry.helm
and expose it on localhost using the integrated LoadBalancer controller.
The dockerfile for the regression test connected to issue 684 used a
rolling tag as base image, making it flaky and fail since it was
introduced.

This commit pins the base image to the digest of bionic-20200219, which,
based on the date of the commit that introduced to the dockerfile would
be the most newest ubuntu build and likely what the "rolling" tag
resolved to back then. Since this also an image from the pre-oci days of
ubuntu, this circumvents a bug in container-diff as well
(GoogleContainerTools/container-diff#389)
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