Fix test command

Author: tstellar

.github/workflows/build-ci-container-tooling.yml

@@ -34,7 +34,7 @@ jobs:
           - container-name: code-format
             test-command: 'cd $HOME && clang-format --version | grep version && git-clang-format -h | grep usage && black --version | grep black'
           - container-name: code-lint
-            test-command: 'cd $HOME && clang-tidy --version | grep version && clang-tidy-diff.py -h | grep usage'
+            test-command: cd $HOME && printf '#include <iostream>\nint main(int argc, char **argv) { std::cout << "Hello\\n"; }' | clang++ -x c++ - && ./a.out | grep Hello
     steps:
       - name: Checkout LLVM
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0