diff --git a/sources/README.md b/sources/README.md
new file mode 100644
index 00000000..d5735ee6
--- /dev/null
+++ b/sources/README.md
@@ -0,0 +1,2 @@
+This is a temporary workaround for twoliter who currently expects a sources
+directory to exist in order for the docker volume mounts to work in buildkit