diff --git a/debugconfig.yaml b/debugconfig.yaml
new file mode 100644
index 0000000..1059357
--- /dev/null
+++ b/debugconfig.yaml
@@ -0,0 +1 @@
+relativeURLs: true
diff --git a/scripts/build b/scripts/build
index 013cbee..4c5f294 100755
--- a/scripts/build
+++ b/scripts/build
@@ -15,4 +15,4 @@ find . \
     -name '*.xml' -or \
     -name '*.txt' -or \
     -name '*.css' -or \
-    -name '*.map' | parallel --bar "$zopfli {} && $brotli {}"
+    -name '*.map' | parallel --eta "$zopfli {} && $brotli {}"