fix(ui): wrong env var name

Author: Guillaume Chau

packages/@vue/cli-ui/.env.production

@@ -1 +1 @@
-VUE_CLI_UI_URL=
+VUE_APP_CLI_UI_URL=

packages/@vue/cli-ui/src/graphql-api/connectors/client-addons.js

@@ -6,7 +6,7 @@ const { resolveModuleRoot } = require('../utils/resolve-path')
 
 let addons = []
 
-let baseUrl = process.env.VUE_CLI_UI_URL
+let baseUrl = process.env.VUE_APP_CLI_UI_URL
 if (typeof baseUrl === 'undefined') {
   baseUrl = 'http://localhost:4000'
 } else {

packages/@vue/cli-ui/src/vue-apollo.js

@@ -5,7 +5,7 @@ import { createApolloClient } from 'vue-cli-plugin-apollo/graphql-client'
 // Install the vue plugin
 Vue.use(VueApollo)
 
-let endpoint = process.env.VUE_CLI_UI_URL
+let endpoint = process.env.VUE_APP_CLI_UI_URL
 if (typeof endpoint === 'undefined') {
   endpoint = 'ws://localhost:4000/graphql'
 } else if (endpoint === '') {

packages/@vue/cli/lib/ui.js

@@ -8,7 +8,7 @@ async function ui (options = {}, context = process.cwd()) {
   }
 
   // Config
-  process.env.VUE_CLI_UI_URL = ''
+  process.env.VUE_APP_CLI_UI_URL = ''
 
   if (!options.dev) {
     process.env.NODE_ENV = 'production'