diff --git a/Jenkinsfile.pjt b/Jenkinsfile.pjt
index 7ec1c07..69aa1cc 100644
--- a/Jenkinsfile.pjt
+++ b/Jenkinsfile.pjt
@@ -8,7 +8,10 @@ pipeline {
 
   environment {
     // ===== Registry =====
-    DUMMY = "true"
+    REGISTRY_HOST = "registry.pjt.kr"
+    IMAGE_REPO    = "alist/api"
+    IMAGE_TAG     = "${BUILD_NUMBER}"
+    DOCKER_CRED   = "docker-registry-cred"   // ← Jenkins Credentials ID
   }
 
   stages {
@@ -27,5 +30,15 @@ pipeline {
         '''
       }
     }
+
+    stage('3) image tab create') {
+      steps {
+        script {
+          env.SHORT_SHA = sh(script: "git rev-parse --short HEAD", returnStdout: true).trim()
+          env.IMAGE_TAG = "${env.BUILD_NUMBER}-${env.SHORT_SHA}"
+          echo "IMAGE_TAG = ${env.IMAGE_TAG}"
+        }
+      }
+    }
   }
 }