fix(v2): fix recent baseurl issues (#3093)

* try to fix the baseUrl related issues

* fix some newly detected broken links

* fix baseurl and broken link issues

* try to configure netlify to use baseUrl deployment

* add proper netlify settings?

* add proper netlify settings?

* add proper netlify settings?

* test commit

* try to fix the redirects

* cleanup working conf

* minor redirect fix

website/docusaurus.config.js

@@ -14,12 +14,14 @@ const allDocHomesPaths = [
   ...versions.slice(1).map((version) => `/docs/${version}/`),
 ];
 
+const baseUrl = process.env.BASE_URL || '/';
+
 module.exports = {
   title: 'Docusaurus',
   tagline: 'Build optimized websites quickly, focus on your content',
   organizationName: 'facebook',
   projectName: 'docusaurus',
-  baseUrl: '/',
+  baseUrl,
   url: 'https://v2.docusaurus.io',
   onBrokenLinks: 'throw',
   favicon: 'img/docusaurus.ico',
@@ -189,7 +191,7 @@ module.exports = {
           activeBaseRegex: `docs/next/(support|team|resources)`,
         },
         {
-          to: 'versions',
+          to: '/versions',
           label: 'All versions',
           position: 'right',
         },