ci: pin registry image to immutable SHA digest

[Ankitsinghsisodya]

Fixes #16502

Changes

Pin the local Docker registry image to an immutable SHA digest in kind-e2e.yaml.

Using a mutable tag (registry:2) pulls whatever Docker Hub resolves at job runtime, breaking reproducibility. This pins to registry:3.0.0@sha256:6c5666b861f3505b116bb9aa9b25175e71210414bd010d92035ff64018f9457e, ensuring CI always pulls the exact same image.

[knative-prow]

Hi @Ankitsinghsisodya. Thanks for your PR.

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[Copilot]

Pull request overview

Pins the Docker image used for the local registry in the Kind e2e GitHub Actions workflow to improve CI reproducibility and avoid unexpected upstream changes.

Changes:

• Update the local registry container image from registry:2 to registry:2.8 in the Kind e2e workflow.

Comments suppressed due to low confidence (1)

.github/workflows/kind-e2e.yaml:60

• Typo in comment: “reigstry” should be “registry”.

        # Make the $REGISTRY_NAME -> 127.0.0.1, to tell `ko` to publish to
        # local reigstry, even when pushing $REGISTRY_NAME:$REGISTRY_PORT/some/image
        sudo echo "127.0.0.1 $REGISTRY_NAME" | sudo tee -a /etc/hosts

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[dprotaso]

/lgtm
/approve

[dprotaso]

/ok-to-test

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.15%. Comparing base (35cd19d) to head (912fa81).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16503      +/-   ##
==========================================
- Coverage   80.26%   80.15%   -0.12%     
==========================================
  Files         217      217              
  Lines       13547    13547              
==========================================
- Hits        10873    10858      -15     
- Misses       2309     2321      +12     
- Partials      365      368       +3     

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[dprotaso]

/retest
/lgtm
/approve

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Ankitsinghsisodya, dprotaso

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