Purelind

Currently we get release branch commit sha1 through a python script, this step is not stable. We need to refactor this part of the logic, directly calling the GitHub API...

unstable test: TestCPUValue

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## Bug Report Please answer these questions before submitting your issue. Thanks! ```shell Stacktrace === RUN TestCPUValue cpu_test.go:47: Error Trace: /home/jenkins/.tidb/tmp/5b8829669b2a941b840f9eb369e2b54f/sandbox/processwrapper-sandbox/2101/execroot/__main__/bazel-out/k8-fastbuild/bin/util/cpu/cpu_test_/cpu_test.runfiles/__main__/util/cpu/cpu_test.go:47 Error: "1.3470625953046786" is not less than "1" Test: TestCPUValue...

[DNM]: test trigger on release-8.1

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### What problem does this PR solve? Issue Number: close #xxx ### What is changed and how it works? ### Check List #### Tests - Unit test - Integration test...

DNM: test pipeline trigger on release-8.0

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### What problem does this PR solve? Issue Number: Close #xxx ### What is changed and how does it work? ```commit-message ``` ### Check List Tests - Unit test -...

[DNM] test ci trigger on 6.1

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### What is changed and how it works? Issue Number: Close #xxx What's Changed: ```commit-message ``` ### Related changes - [ ] PR to update `pingcap/docs`/`pingcap/docs-cn`: - [ ] Need...

[DNM] test ci trigger on release-8.1

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### What is changed and how it works? Issue Number: Close #xxx What's Changed: ```commit-message ``` ### Related changes - [ ] PR to update `pingcap/docs`/`pingcap/docs-cn`: - [ ] Need...

DNM: test ci on 8.2

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### What problem does this PR solve? Issue Number: close #xxx Problem Summary: ### What changed and how does it work? ### Check List Tests - [ ] Unit test...

DNM: test ci trigger

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### What problem does this PR solve? Issue Number: close #xxx ### What is changed and how it works? ### Check List #### Tests - Unit test - Integration test...

feat: add dockerfile for docs ci

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add dockerfile for docs ci

The pipeline of integration testing supports triggering on the release branch.

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For the purpose of release testing, this will also completely disable some old pipelines.