[Netlify] Allow public URL detection (#1585)

* [Netlify] Allow public URL detection

* use deploy specific URL at build time for Netlify

* Changelog entry

* jsdoc entry

CHANGELOG.md

@@ -26,6 +26,7 @@ Check the BYOC documentation for more info. ([#1568](https://github.com/Sitecore
 * `[templates/nextjs]` `[templates/react]` `[templates/vue]` `[templates/angular]`  Introduce layout service REST configuration name environment variable ([#1543](https://github.com/Sitecore/jss/pull/1543))
 * `[templates/nextjs]` `[sitecore-jss-nextjs]` Support for out-of-process editing data caches was added. Vercel KV or a custom Redis cache can be used to improve editing in Pages and Experience Editor when using Vercel deployment as editing/rendering host ([#1530](https://github.com/Sitecore/jss/pull/1530))
 * `[sitecore-jss-react]` Built-in MissingComponent component can now accept "errorOverride" text in props - to be displayed in the yellow frame as a custom error message. ([#1568](https://github.com/Sitecore/jss/pull/1568))
+* `[sitecore-jss-nextjs]` Support for public URL resolution in Netlify ([#1585](https://github.com/Sitecore/jss/pull/1585))
 * `[templates/nextjs]` `[sitecore-jss-nextjs]` Better error handling for component-level data fetching ([#1586](https://github.com/Sitecore/jss/pull/1586))
 
 ### 🧹 Chores

packages/sitecore-jss-nextjs/src/utils/utils.ts

@@ -7,8 +7,10 @@ import { isEditorActive, resetEditorChromes } from '@sitecore-jss/sitecore-jss/u
  * This is set to http://localhost:3000 by default.
  * VERCEL_URL is provided by Vercel in case if we are in Preview deployment (deployment based on the custom branch),
  * preview deployment has unique url, we don't know exact url.
+ * Similarly, DEPLOY_URL is provided by Netlify and would give us the deploy URL
  */
 export const getPublicUrl = (): string => {
+  if (process.env.NETLIFY && process.env.DEPLOY_URL) return process.env.DEPLOY_URL;
   if (process.env.VERCEL_URL) return `https://${process.env.VERCEL_URL}`;
 
   let url = process.env.PUBLIC_URL;