diff --git a/packer-image-buid.groovy b/packer-image-buid.groovy
index b615cdc..4117d06 100644
--- a/packer-image-buid.groovy
+++ b/packer-image-buid.groovy
@@ -43,6 +43,7 @@
 //
 def job_env = env.getEnvironment().findAll { k, v -> v }
 gerritCredentials = env.CREDENTIALS_ID ?: 'gerrit'
+gerritCredentialsHttp = env.GERRIT_HTTP_CREDENTIALS_ID ?: 'mcp-jenkins-http'
 
 /////
 extra_vars = readYaml text: job_env.get('EXTRA_VARIABLES_YAML','').trim()
@@ -187,6 +188,15 @@
                                 if (os_openrc.get('CLOUD_REGION', 'US').matches("[Ee][Uu]")) {
                                     sh "sed -i 's/debmirror_mirrors_host: .*/debmirror_mirrors_host: mirror-eu.mcp.mirantis.net/' config-drive/model/${filePath}"
                                 }
+                                filePath = 'classes/cluster/mcp-offline/infra/mirror/init.yml'
+                                withCredentials([usernamePassword(
+                                    credentialsId: gerritCredentialsHttp,
+                                    usernameVariable: 'GERRIT_HTTP_USER',
+                                    passwordVariable: 'GERRIT_HTTP_PASS')
+                                ]) {
+                                    sh "sed -i 's/%STACKLIGHT_PYTEST_GIT_HTTPS_USER%/${GERRIT_HTTP_USER}/' config-drive/model/${filePath}"
+                                    sh "sed -i 's/%STACKLIGHT_PYTEST_GIT_HTTPS_PASS%/${GERRIT_HTTP_PASS}/' config-drive/model/${filePath}"
+                                }
                             }
 
                             def reclass_url = extra_vars.get('RECLASS_SYSTEM_URL', '')