diff --git a/build.sh b/build.sh
index 216da24..b301c88 100755
--- a/build.sh
+++ b/build.sh
@@ -4,12 +4,14 @@ ROOT="$(dirname "${FILE}")"
 
 OUTPUT="${ROOT}/out"
 
-#rm --force --recursive "${OUTPUT}"
+rm --force --recursive "${OUTPUT}"
 mkdir --parents "${OUTPUT}"
 
 pandoc \
+--verbose \
 --standalone \
 --self-contained \
 --output "${OUTPUT}/index.html" \
 --write 'revealjs' \
+-V revealjs-url='/sw/revealjs/up' \
 "${ROOT}/index.md"