add readme and change some scripts

vite.config.js

@@ -1,5 +1,8 @@
 import vite from 'vite'
 import vue from '@vitejs/plugin-vue'
+import fs from 'fs'
+// TODO: replace with import, when esm json import is available
+const cfg = JSON.parse(String(fs.readFileSync('./config.json')))
 
 export default vite.defineConfig({
   plugins: [ vue() ],
@@ -10,12 +13,8 @@ export default vite.defineConfig({
   },
   server: {
     proxy: {
-      '^/(api|uploads)/.*': {
-        target: 'http://localhost:1337',
-        secure: false,
-      },
-      '^/upload': {
-        target: 'http://localhost:1337',
+      '^/((api|uploads)/.*|upload)': {
+        target: `http://${cfg.http.hostname}:${cfg.http.port}`,
         secure: false,
       },
     },