update dev for dawn-manager

dawn-manager/dev

+pipeline {
+  agent {label "master"}
+  tools {nodejs "node"}
+  stages {
+      
+    stage('build') {
+        steps {
+            git branch: 'main',
+                credentialsId: 'tucker-gitlab-login',
+                url: "https://gitlab.cs.umd.edu/dawn/go-backend/dawn-manager.git"
+
+            sh """
+                npm i
+                npm run build-staging
+            """
+        }
+    }
+
+    
+    stage('copy build') {
+        steps {
+            sh '''
+                sudo rm -rf /var/www/dawn_dev/_admin
+                sudo mkdir /var/www/dawn_dev/_admin
+                sudo cp -r build/* /var/www/dawn_dev/_admin
+            '''
+        }
+    }
+    
+
+    
+    stage('restart nginx') {
+        steps {
+            sh '''
+                sudo service nginx restart
+            '''
+        }
+    }
+   
+  }
+}