Add Page Share feature and instructions for self-hosting

page-share.md

@@ -1,2 +1,37 @@
 # Page Share
 
+Page Share allows you to share the chat publicly, similar to ChatGPT Share. You can self-host Page Share for privacy and security.
+
+The default Page Share is hosted at [https://pageshare.xyz](https://pageshare.xyz).
+
+## Self-Host
+
+You can self-host Page Share using two methods:
+
+- Railway
+- Docker
+
+### Railway
+
+Click the button below to deploy the code to Railway.
+
+[![Deploy on Railway](https://railway.app/button.svg)](https://railway.app/template/VbiS2Q?referralCode=olbszX)
+
+### Docker
+
+1. Clone the repository
+
+```bash
+git clone https://github.com/n4ze3m/page-assist-app.git
+cd page-assist-app
+```
+
+2. Run the server
+
+```bash
+docker-compose up
+```
+
+3. Open the app
+
+Navigate to [http://localhost:3000](http://localhost:3000) in your browser.