Fix Keystatic configuration (#10783)

- Always use the `github` mode
- Set a `pathPrefix` as the repository is a monorepo

packages/twenty-website/.env.example

@@ -2,3 +2,8 @@ GITHUB_TOKEN=your_github_token
 DATABASE_PG_URL=postgres://website:website@localhost:5432/website # only if using postgres
 NEXT_PUBLIC_ALGOLIA_APP_ID=twenty_appId
 NEXT_PUBLIC_ALGOLIA_API_KEY=twenty_apiKey
+
+KEYSTATIC_GITHUB_CLIENT_ID=""
+KEYSTATIC_GITHUB_CLIENT_SECRET=""
+KEYSTATIC_SECRET=""
+NEXT_PUBLIC_KEYSTATIC_GITHUB_APP_SLUG=""

packages/twenty-website/keystatic.config.ts

@@ -3,17 +3,12 @@ import { wrapper } from '@keystatic/core/content-components';
 
 export default config({
   storage: {
-    kind:
-      process.env.KEYSTATIC_STORAGE_KIND === ''
-        ? 'local'
-        : ((process.env.KEYSTATIC_STORAGE_KIND || 'local') as
-            | 'local'
-            | 'github'
-            | 'cloud'),
+    kind: 'github',
     repo: {
       owner: 'twentyhq',
       name: 'twenty',
     },
+    pathPrefix: 'packages/twenty-website',
   },
   collections: {
     developers: collection({