diff --git a/Dockerfile b/Dockerfile
index 27d9d92..32d04a7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
 FROM verdaccio/verdaccio:5
 USER root
-RUN yarn add verdaccio-ldap
-USER verdaccio
\ No newline at end of file
+RUN npm install --global verdaccio-ldap
+USER verdaccio