Skip build directories

.github/workflows/cpp-format.yml

@@ -26,7 +26,7 @@ jobs:
             echo "✅ $file is properly formatted."
           else
             echo "❌ $file is not properly formatted. Please run clang-format in the sphericart root directory with" 
-            echo "find . -name "*.c" -o -name "*.h" -o -name "*.cpp" -o -name "*.hpp" -o -name "*.cu" -o -name "*.cuh" | xargs clang-format -i"
+            echo "find . \( -name "*.c" -o -name "*.h" -o -name "*.cpp" -o -name "*.hpp" -o -name "*.cu" -o -name "*.cuh" \) -not -path "*/build/*" | xargs clang-format -i"
             exit 1
           fi
         done