diff --git a/jenkins.sh b/jenkins.sh
index 05a86be..ab472ed 100755
--- a/jenkins.sh
+++ b/jenkins.sh
@@ -1,6 +1,11 @@
 #! /bin/bash -e
 
 : "${JENKINS_HOME:="/var/jenkins_home"}"
+
+if [[ -f "/usr/local/bin/pre_startup_copy_plugins.sh" ]] ; then
+  /bin/bash /usr/local/bin/pre_startup_copy_plugins.sh
+fi
+
 cat << EOF >>/usr/share/jenkins/ref/init.groovy.d/executors.groovy
 import jenkins.model.*
 Jenkins.instance.setNumExecutors(${JENKINS_NUM_EXECUTORS:-2})