feat: Add Custom Welcome Message Support in LibreChat [#5870](danny-a…

…vila/LibreChat#5870)

pages/docs/configuration/dotenv.mdx

@@ -948,22 +948,28 @@ Properly setting cache headers is crucial for optimizing the performance and eff
 * Uncomment `STATIC_CACHE_S_MAX_AGE` to change the `s-maxage` for static files. By default this is set to 1 week.
   - This is for the _shared cache_, which is used by CDNs and proxies.
 
-#### App Title and Footer
+#### App Title, Welcome Message, and Footer
 
 <OptionTable
   options={[
-    ['APP_TITLE', 'string', 'App title.','APP_TITLE=LibreChat'],
-    ['CUSTOM_FOOTER', 'string', 'Custom footer.','# CUSTOM_FOOTER="My custom footer"'],
+    ['APP_TITLE', 'string', 'App title.', 'APP_TITLE=LibreChat'],
+    ['CUSTOM_WELCOME_MESSAGE', 'string', 'Custom welcome message.', '# CUSTOM_WELCOME_MESSAGE="My custom welcome message"'],
+    ['CUSTOM_FOOTER', 'string', 'Custom footer.', '# CUSTOM_FOOTER="My custom footer"'],
   ]}
 />
 
 **Behaviour:**
 
-* Uncomment `CUSTOM_FOOTER` to add a custom footer.
-* Uncomment and leave `CUSTOM_FOOTER` empty to remove the footer.
-* You can now add one or more links in the CUSTOM_FOOTER value using the following format: `[Anchor text](URL)`. Each link should be delineated with a pipe (`|`).
+- **`CUSTOM_WELCOME_MESSAGE`**:
+  * Uncomment and set a value to display a custom welcome message on the landing page.
+  * Leave it commented or empty to use the default welcome message.
 
-> **Markdown example:** `CUSTOM_FOOTER=[Link 1](http://example1.com) | [Link 2](http://example2.com)`
+- **`CUSTOM_FOOTER`**:
+  * Uncomment `CUSTOM_FOOTER` to add a custom footer.
+  * Uncomment and leave `CUSTOM_FOOTER` empty to remove the footer.
+  * You can now add one or more links in the CUSTOM_FOOTER value using the following format: `[Anchor text](URL)`. Each link should be delineated with a pipe (`|`).
+
+  > **Markdown example:** `CUSTOM_FOOTER=[Link 1](http://example1.com) | [Link 2](http://example2.com)`
 
 #### Birthday Hat