[llvm] [Github][CI] Add `doc8` for clang-tidy documentation formatting (PR #168827)

[via llvm-commits]

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@@ -71,25 +71,41 @@ jobs:
                 -DLLVM_INCLUDE_TESTS=OFF \
                 -DCLANG_INCLUDE_TESTS=OFF \
                 -DCMAKE_BUILD_TYPE=Release
-          
+
           ninja -C build \
                 clang-tablegen-targets \
                 genconfusable               # for "ConfusableIdentifierCheck.h"
 
-      - name: Run code linter
+      - name: Install linter dependencies
+        run: pip install doc8 --break-system-packages
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zeyi2 wrote:

I understand that this is completely wrong, this stage is to add `doc8` package(seems that modifying Dockerfile doesn't work in permerge CI) so I can test whether the modified python script can find the issue in the repo correctly.

https://github.com/llvm/llvm-project/pull/168827