Use LLVM apt repository for clang-format-18

.github/workflows/format-check-new.yml

@@ -11,29 +11,15 @@ jobs:
 
     - uses: actions/checkout@v3
 
-    - name: Setup clang-format Docker alias
+    - name: Install clang-format 18
       run: |
-        # Create a wrapper script for clang-format that uses Docker
-        cat > /tmp/clang-format-wrapper << 'EOF'
-        #!/bin/bash
-        # Convert relative paths to absolute paths and run clang-format in Docker
-        args=()
-        for arg in "$@"; do
-          if [[ "$arg" == /* ]] || [[ "$arg" == -* ]]; then
-            # Absolute path or option, use as-is
-            args+=("$arg")
-          elif [[ -e "$arg" ]]; then
-            # Relative path that exists, convert to absolute
-            args+=("$(realpath "$arg")")
-          else
-            # Not a file path, use as-is
-            args+=("$arg")
-          fi
-        done
-        docker run --rm -i -v "$PWD":"$PWD" -w "$PWD" silkeh/clang:18 clang-format "${args[@]}"
-        EOF
-        sudo mv /tmp/clang-format-wrapper /usr/local/bin/clang-format
-        sudo chmod +x /usr/local/bin/clang-format
+        # Install clang-format-18 from LLVM apt repository
+        wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt.llvm.org.asc
+        echo "deb http://apt.llvm.org/noble/ llvm-toolchain-noble-18 main" | sudo tee /etc/apt/sources.list.d/llvm.list
+        sudo apt-get update
+        sudo apt-get install -y clang-format-18
+        # Create symlink
+        sudo update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-18 100
         # Verify version
         clang-format --version