diff --git a/container_files/grouper.installer.properties b/container_files/grouper.installer.properties
index 207d0d61..78b76fe8 100644
--- a/container_files/grouper.installer.properties
+++ b/container_files/grouper.installer.properties
@@ -2,3 +2,4 @@ download.server.url = https://software.internet2.edu/grouper
 grouperInstaller.default.installOrUpgrade = buildContainer
 grouperInstaller.autorun.useDefaultsAsMuchAsAvailable = true
 grouperInstaller.webAppWillBeInContainer = /opt/grouper/grouperWebapp
+grouperInstaller.autorun.buildContainerUseExistingJarIfExists = false