diff --git a/Jenkinsfile.pjt b/Jenkinsfile.pjt
index 6c4e7b2..d882f46 100644
--- a/Jenkinsfile.pjt
+++ b/Jenkinsfile.pjt
@@ -40,5 +40,14 @@ pipeline {
         }
       }
     }
+
+    stage('4) Docker Build') {
+      steps {
+        sh '''
+          set -e
+          docker build -t ${REGISTRY_HOST}/${IMAGE_REPO}:${IMAGE_TAG} .
+         '''
+      }
+    }
   }
 }