* 增加Docker开发环境

* 更新Dockerfile构建文件，升级NodeJS依赖版本。
 * 遵循ESLint重新格式化代码，修复部分警告
 * 登录Token失效增加登出提示
 * 网络请求问题增加错误错误提示
 * 升级UI依赖库

frontend/src/utils/request.js

@@ -0,0 +1,123 @@
+import axios from 'axios'
+import { MessageBox, Message } from 'element-ui'
+import store from '@/store'
+import { getToken } from '@/utils/auth'
+import i18n from '@/i18n'
+import router from '@/router'
+
+const codeMessage = {
+  200: '服务器成功返回请求的数据。',
+  201: '新建或修改数据成功。',
+  202: '一个请求已经进入后台排队（异步任务）。',
+  204: '删除数据成功。',
+  400: '发出的请求有错误，服务器没有进行新建或修改数据的操作。',
+  401: '用户没有权限（令牌、用户名、密码错误）。',
+  403: '用户得到授权，但是访问是被禁止的。',
+  404: '发出的请求针对的是不存在的记录，服务器没有进行操作。',
+  406: '请求的格式不可得。',
+  410: '请求的资源被永久删除，且不会再得到的。',
+  422: '当创建一个对象时，发生一个验证错误。',
+  500: '服务器发生错误，请检查服务器。',
+  502: '网关错误。',
+  503: '服务不可用，服务器暂时过载或维护。',
+  504: '网关超时。'
+}
+
+/**
+ * 异常处理程序
+ */
+const errorHandler = (error) => {
+  const { response } = error
+  const routePath = router.currentRoute.path
+  if (response && response.status) {
+    const errorText = codeMessage[response.status] || response.statusText
+    const { status } = response
+    Message({
+      message: `请求错误 ${status}: ${response.request.responseURL},${errorText}`,
+      type: 'error',
+      duration: 5 * 1000
+    })
+    switch (status) {
+      case 401:
+        if (routePath !== '/login' && routePath !== '/') {
+          MessageBox.confirm(
+            i18n.t('auth.login_expired_message'),
+            i18n.t('auth.login_expired_title'), {
+              confirmButtonText: i18n.t('auth.login_expired_confirm'),
+              cancelButtonText: i18n.t('auth.login_expired_cancel'),
+              type: 'warning'
+            }).then(() => {
+            store.dispatch('user/resetToken').then(() => {
+              location.reload()
+            })
+          })
+        }
+        break
+      default:
+    }
+  } else if (!response) {
+    Message({
+      message: `您的网络发生异常，无法连接服务器`,
+      type: 'error',
+      duration: 5 * 1000
+    })
+  }
+  return response
+}
+
+// 根据 VUE_APP_BASE_URL 生成 baseUrl
+let baseUrl = process.env.VUE_APP_BASE_URL
+  ? process.env.VUE_APP_BASE_URL
+  : 'http://localhost:8000'
+if (!baseUrl.match(/^https?/i)) {
+  baseUrl = `${window.location.protocol}//${window.location.host}${process.env.VUE_APP_BASE_URL}`
+}
+
+// 如果 Docker 中设置了 CRAWLAB_API_ADDRESS 这个环境变量，则会将 baseUrl 覆盖
+const CRAWLAB_API_ADDRESS = '###CRAWLAB_API_ADDRESS###'
+if (!CRAWLAB_API_ADDRESS.match('CRAWLAB_API_ADDRESS')) {
+  baseUrl = CRAWLAB_API_ADDRESS
+}
+// create an axios instance
+const service = axios.create({
+  baseURL: baseUrl, // url = base url + request url
+  // withCredentials: true, // send cookies when cross-domain requests
+  timeout: 5000 // request timeout
+})
+// request interceptor
+service.interceptors.request.use(
+  config => {
+    // do something before request is sent
+
+    if (store.getters.token) {
+      // let each request carry token
+      // ['X-Token'] is a custom headers key
+      // please modify it according to the actual situation
+      config.headers['Authorization'] = getToken()
+    }
+    return config
+  },
+  error => {
+    // do something with request error
+    console.log(error) // for debug
+    return Promise.reject(error)
+  }
+)
+
+// response interceptor
+service.interceptors.response.use(
+  /**
+   * If you want to get http information such as headers or status
+   * Please return  response => response
+   */
+  /**
+   * Determine the request status by custom code
+   * Here is just an example
+   * You can also judge the status by HTTP Status Code
+   */
+  response => {
+    return response
+  },
+  errorHandler
+)
+export default service