diff --git a/pipelines/monolithic.Jenkinsfile b/pipelines/monolithic.Jenkinsfile
index 2fd3592..f0f694c 100644
--- a/pipelines/monolithic.Jenkinsfile
+++ b/pipelines/monolithic.Jenkinsfile
@@ -163,6 +163,9 @@ pipeline {
         booleanParam (
             name: 'BUILD_ISO'
         )
+        booleanParam (
+            name: 'POST_ISO_SIGNING'
+        )
         booleanParam (
             name: 'BUILD_RT'
         )
diff --git a/pipelines/parts/build-iso.Jenkinsfile b/pipelines/parts/build-iso.Jenkinsfile
index b5a07f1..ad96af3 100644
--- a/pipelines/parts/build-iso.Jenkinsfile
+++ b/pipelines/parts/build-iso.Jenkinsfile
@@ -43,6 +43,9 @@ pipeline {
         booleanParam (
             name: 'BUILD_ISO'
         )
+        booleanParam (
+            name: 'POST_ISO_SIGNING'
+        )
     }
     stages {
         stage ("build-iso") {
@@ -51,6 +54,7 @@ pipeline {
             }
         }
         stage ("sign-iso") {
+            when { expression { params.POST_ISO_SIGNING } }
             steps {
                 sh ("${Constants.SCRIPTS_DIR}/sign-iso.sh")
             }
diff --git a/scripts/start-containers.sh b/scripts/start-containers.sh
index de39fcf..cc4d89b 100755
--- a/scripts/start-containers.sh
+++ b/scripts/start-containers.sh
@@ -39,6 +39,14 @@ while [[ "$(stx control status | grep -i running | wc -l)" -lt 6 ]] ; do
 done
 stx control status
 
+# Add ssh access key to signing server
+if [ -f ~/.ssh/id_rsa ]; then
+    notice "Registering signing server access key"
+    stx control keys-add --key-type=signing-server --key=~/.ssh/id_rsa
+else
+    notice "Signing server access key not found"
+fi
+
 # finish setup
 stx build prepare