docs: add prebuilt Docker image usage to README

Author: miurla

README.md

@@ -139,12 +139,31 @@ Visit http://localhost:3000 in your browser.
 
 ## 🌐 Deploy
 
-Host your own live version of Morphic with Vercel or Cloudflare Pages.
+Host your own live version of Morphic with Vercel, Cloudflare Pages, or Docker.
 
 ### Vercel
 
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fmiurla%2Fmorphic&env=OPENAI_API_KEY,TAVILY_API_KEY,UPSTASH_REDIS_REST_URL,UPSTASH_REDIS_REST_TOKEN)
 
+### Docker Prebuilt Image
+
+Prebuilt Docker images are available on GitHub Container Registry:
+
+```bash
+docker pull ghcr.io/miurla/morphic:latest
+```
+
+You can use it with docker-compose:
+
+```yaml
+services:
+  morphic:
+    image: ghcr.io/miurla/morphic:latest
+    env_file: .env.local
+    ports:
+      - '3000:3000'
+```
+
 ## 🔎 Search Engine
 
 ### Setting up the Search Engine in Your Browser