jenkins: auto-configure OIDC via init script

services/jenkins/helmrelease.yaml

@@ -45,6 +45,8 @@ spec:
       containerEnv:
         - name: ENABLE_OIDC
           value: "false"
+        - name: OIDC_ISSUER
+          value: "https://sso.bstein.dev/realms/atlas"
         - name: OIDC_CLIENT_ID
           valueFrom:
             secretKeyRef:
@@ -81,6 +83,55 @@ spec:
               name: jenkins-oidc
               key: logoutUrl
               optional: true
+      initScripts:
+        oidc.groovy: |
+          import jenkins.model.Jenkins
+          import org.jenkinsci.plugins.oic.OicSecurityRealm
+          def env = System.getenv()
+          def enable = (env['ENABLE_OIDC'] ?: 'false').toBoolean()
+          if (!enable) {
+            println("OIDC disabled (ENABLE_OIDC=false); keeping default security realm")
+            return
+          }
+          def required = ['OIDC_CLIENT_ID','OIDC_CLIENT_SECRET','OIDC_AUTH_URL','OIDC_TOKEN_URL','OIDC_USERINFO_URL']
+          if (!required.every { env[it] }) {
+            println("OIDC enabled but missing vars: ${required.findAll { !env[it] }}")
+            return
+          }
+          try {
+            def realm = new OicSecurityRealm(
+              env['OIDC_CLIENT_ID'],
+              env['OIDC_CLIENT_SECRET'],
+              env['OIDC_TOKEN_URL'],
+              env['OIDC_AUTH_URL'],
+              env['OIDC_USERINFO_URL'],
+              true, // logout from provider
+              env['OIDC_LOGOUT_URL'] ?: "",
+              "", // postLogoutRedirectUrl
+              "openid email profile",
+              "", // prompt
+              "preferred_username",
+              "name",
+              "email",
+              false, // disableSslVerification
+              true,  // escapeHatchEnabled
+              "admin",
+              "",    // escapeHatchSecret
+              "",    // escapeHatchGroup
+              true,  // loadUserInfo
+              true,  // validateScopes
+              false, // allowUnsignedIdTokens
+              false, // enforceValidIssuers
+              env['OIDC_ISSUER'] ?: "",
+              false  // disableUserInfoFetch
+            )
+            def j = Jenkins.get()
+            j.setSecurityRealm(realm)
+            j.save()
+            println("Configured OIDC realm from init script")
+          } catch (Exception e) {
+            println("Failed to configure OIDC realm: ${e}")
+          }
     persistence:
       enabled: true
       storageClass: astreae