diff --git a/build/index.js b/build/index.js
new file mode 100644
index 00000000..a750ae0b
--- /dev/null
+++ b/build/index.js
@@ -0,0 +1,31 @@
+const { run } = require('runjs')
+const chalk = require('chalk')
+const config = require('../vue.config.js')
+const rawArgv = process.argv.slice(2)
+const args = rawArgv.join(' ')
+
+if (process.env.npm_config_preview || rawArgv.includes('--preview')) {
+  run(`vue-cli-service build ${args}`)
+
+  const port = 9526
+  const basePath = config.baseUrl
+
+  var connect = require('connect')
+  var serveStatic = require('serve-static')
+  const app = connect()
+
+  app.use(
+    basePath,
+    serveStatic('./dist', {
+      index: ['index.html', '/']
+    })
+  )
+
+  app.listen(port, function() {
+    console.log(
+      chalk.green(`> Listening at  http://localhost:${port}${basePath}`)
+    )
+  })
+} else {
+  run(`vue-cli-service build ${args}`)
+}
diff --git a/favicon.ico b/favicon.ico
deleted file mode 100644
index 34b63ac6..00000000
Binary files a/favicon.ico and /dev/null differ
diff --git a/package.json b/package.json
index 09487f42..84bc63c4 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,8 @@
     "dev": "vue-cli-service serve",
     "build:prod": "vue-cli-service build",
     "build:sit": "vue-cli-service build --mode text",
+    "build:preview": "node build/index.js --preview",
+    "build:report": "node build/index.js --report",
     "lint": "eslint --ext .js,.vue src",
     "test": "npm run lint",
     "test:unit": "vue-cli-service test:unit",
@@ -37,11 +39,11 @@
   "dependencies": {
     "axios": "0.18.0",
     "clipboard": "1.7.1",
-    "codemirror": "5.39.2",
-    "driver.js": "0.5.2",
-    "dropzone": "5.2.0",
+    "codemirror": "5.42.0",
+    "driver.js": "0.8.1",
+    "dropzone": "5.5.1",
     "echarts": "4.1.0",
-    "element-ui": "2.4.6",
+    "element-ui": "2.4.10",
     "file-saver": "1.3.8",
     "js-cookie": "2.2.0",
     "jsonlint": "1.6.3",
@@ -50,7 +52,6 @@
     "nprogress": "0.2.0",
     "path-to-regexp": "2.4.0",
     "screenfull": "3.3.3",
-    "showdown": "1.8.6",
     "sortablejs": "1.7.0",
     "tui-editor": "1.2.7",
     "vue": "2.5.17",
@@ -58,29 +59,33 @@
     "vue-i18n": "7.3.2",
     "vue-router": "3.0.2",
     "vue-splitpane": "1.0.2",
-    "vuedraggable": "^2.16.0",
+    "vuedraggable": "2.17.0",
     "vuex": "3.0.1",
     "xlsx": "^0.11.16"
   },
   "devDependencies": {
     "@babel/core": "7.0.0",
     "@babel/register": "7.0.0",
-    "@vue/cli-plugin-babel": "3.1.1",
-    "@vue/cli-plugin-eslint": "3.1.5",
-    "@vue/cli-plugin-unit-jest": "3.1.1",
-    "@vue/cli-service": "3.1.4",
+    "@vue/cli-plugin-babel": "3.2.0",
+    "@vue/cli-plugin-eslint": "3.2.1",
+    "@vue/cli-plugin-unit-jest": "3.2.0",
+    "@vue/cli-service": "3.2.0",
     "@vue/test-utils": "1.0.0-beta.25",
     "babel-core": "7.0.0-bridge.0",
     "babel-jest": "23.6.0",
+    "chalk": "^2.4.1",
+    "connect": "^3.6.6",
     "husky": "0.14.3",
     "lint-staged": "7.2.2",
     "mockjs": "1.0.1-beta3",
     "node-sass": "^4.9.0",
+    "runjs": "^4.3.2",
     "sass-loader": "7.0.3",
-    "script-ext-html-webpack-plugin": "2.0.1",
+    "script-ext-html-webpack-plugin": "2.1.3",
     "script-loader": "0.7.2",
-    "svg-sprite-loader": "3.8.0",
-    "svgo": "1.0.5",
+    "serve-static": "^1.13.2",
+    "svg-sprite-loader": "4.1.3",
+    "svgo": "1.1.1",
     "vue-template-compiler": "2.5.17"
   },
   "engines": {