diff --git a/.dockerignore b/.dockerignore
index bc6c2b61bc74a546a57ae2cd93563a04c1b029a3..cfecf3aa1ec3fe60c5e8a78b47b834241ef4a85a 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,3 +1,4 @@
 # .git
 Tests/Data
 _out/images
+ThirdParty/container-maker