diff --git a/Dockerfile b/Dockerfile
index 334951d493961e46bf79700e7c312b004b295c04..5a9318f9f3931f1800c351db5d24ecb59b1ea0c8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
 FROM perl:5.30-slim
 
 COPY bin/ /app/bin/
+COPY ext/ /app/ext/
 COPY lib/ /app/lib/
 COPY Build.PL cpanfile* /app/
 
diff --git a/scripts/makedeb-docker-helper b/scripts/makedeb-docker-helper
index e15f31da35d84a9e445bbab94a3382230138ba03..0f6a9457b5909f817595e3e86ed6849e118a075d 100755
--- a/scripts/makedeb-docker-helper
+++ b/scripts/makedeb-docker-helper
@@ -20,7 +20,7 @@ apt-cache dumpavail | dpkg --merge-avail
 
 mkdir -p /src/app
 cp -a /orig/Build.PL /orig/Changelog /orig/README.md /src/app
-cp -a /orig/bin /orig/lib /src/app
+cp -a /orig/bin /orig/ext /orig/lib /src/app
 cd /src/app
 
 sed -i 's/sign *=> *1/sign => 0/' Build.PL