diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..87153d3
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+FILE="$(realpath "${BASH_SOURCE[0]}")"
+ROOT="$(dirname "${FILE}")"
+
+rsync \
+--archive \
+--delete-before \
+--partial \
+--progress \
+--verbose \
+"${ROOT}/in/" \
+"${ROOT}/out/"