Fixati forse veramente i problemi del .env

client/package.json

@@ -12,6 +12,7 @@
     "author": "",
     "license": "ISC",
     "devDependencies": {
+        "dotenv": "^16.0.0",
         "sass": "^1.49.9",
         "vite": "^2.8.6"
     }

client/vite.config.js

@@ -1,22 +1,29 @@
+import { defineConfig, loadEnv } from 'vite'
 import { resolve } from 'path'
-import { defineConfig } from 'vite'
 
-export default defineConfig({
-    build: {
-        rollupOptions: {
-            input: {
-                main: resolve(__dirname, 'index.html'),
-                login: resolve(__dirname, 'login.html'),
+export default defineConfig(({ mode }) => {
+    process.env = { ...process.env, ...loadEnv(mode, process.cwd(), '') }
+
+    console.log(`BASE_URL = "${process.env.BASE_URL}"`)
+
+    return {
+        base: process.env.BASE_URL,
+        build: {
+            rollupOptions: {
+                input: {
+                    main: resolve(__dirname, 'index.html'),
+                    login: resolve(__dirname, 'login.html'),
+                },
             },
         },
-    },
-    server: {
-        proxy: {
-            '/api': {
-                target: 'http://localhost:4000/api',
-                changeOrigin: true,
-                rewrite: path => path.replace(/^\/api/, ''),
+        server: {
+            proxy: {
+                '/api': {
+                    target: 'http://localhost:4000/api',
+                    changeOrigin: true,
+                    rewrite: path => path.replace(/^\/api/, ''),
+                },
             },
         },
-    },
+    }
 })