fix: fixes build fail issue of windows

Author: dineshsutihar

frontend/build.js

@@ -1,10 +1,9 @@
 import esbuild from "esbuild";
 import "dotenv/config";
 
-const define = {};
-for (const k in process.env) {
-  define[`process.env.${k}`] = JSON.stringify(process.env[k]);
-}
+const define = {
+  "process.env.BACKEND_URL": JSON.stringify(process.env.BACKEND_URL || ""),
+};
 
 esbuild
   .build({

frontend/scripts/ui.js

@@ -110,7 +110,7 @@ export function injectOrUpdateTranslations(
     codeWrapper.className = "code-wrapper";
     const copyButton = document.createElement("div");
     copyButton.className = "copy-button";
-    copyButton.innerText = "copy";
+    copyButton.innerText = "Copy";
     copyButton.addEventListener("click", () => {
       navigator.clipboard.writeText(translations[lang]).then(() => {
         copyButton.innerText = "Copied!";