Add global Git safe directory configuration in Docker build step to address permission issues

Author: maartenba

build.cs

@@ -61,7 +61,7 @@ await RunAsync("docker",
         "-e NODE_OPTIONS=\"--max-old-space-size=8192\" " +
         $"-e GITHUB_TOKEN=\"{githubToken}\" " +
         "node:24-slim " +
-        "sh -c \"apt-get update && apt-get install -y git && npm ci && npm run build && cp -r dist/. /output/\"",
+        "sh -c \"apt-get update && apt-get install -y git && git config --global --add safe.directory /app && npm ci && npm run build && cp -r dist/. /output/\"",
         configureEnvironment: env => env.Add("MSYS_NO_PATHCONV", "1"));
 });