...

base/jenkins/2.46.1/init.groovy

@@ -0,0 +1,17 @@
+#!groovy
+
+import jenkins.model.*
+import hudson.security.*
+import jenkins.security.s2m.AdminWhitelistRule
+
+def instance = Jenkins.getInstance()
+
+def hudsonRealm = new HudsonPrivateSecurityRealm(false)
+hudsonRealm.createAccount("admin", "admin")
+instance.setSecurityRealm(hudsonRealm)
+
+def strategy = new FullControlOnceLoggedInAuthorizationStrategy()
+instance.setAuthorizationStrategy(strategy)
+instance.save()
+
+Jenkins.instance.getInjector().getInstance(AdminWhitelistRule.class).setMasterKillSwitch(false)