fix: setup demo build for gh pages

Author: MichaelGitArt

demo/vite.config.ts

@@ -3,7 +3,11 @@ import { defineConfig } from 'vite'
 import vue from '@vitejs/plugin-vue'
 import WindiCSS from 'vite-plugin-windicss'
 
-export default defineConfig({
+export default ({ mode }: { mode: 'production'| 'development' }) => defineConfig({
+  base: mode === 'production'
+    ? '/gitart-vue-dialog/'
+    : '/',
+
   plugins: [
     vue(),
     WindiCSS(),
@@ -20,4 +24,4 @@ export default defineConfig({
       'plugin': path.resolve(__dirname, '../dist'),
     },
   },
-})
+})