remove docker-compose.yml in favor of README docs (#2)

The compose file was intended for local dev, but the primary use case
is end users pulling the published GHCR image into their own stack.
README already documents the compose snippet; local dev uses bun run dev.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: dfalling

README.md

@@ -25,13 +25,7 @@ services:
     restart: unless-stopped
 ```
 
-Or run the full stack including Postgres:
-
-```bash
-docker compose up -d
-```
-
-The server will be available at `http://localhost:3000`.
+The server will be available at `http://your-server:3000`.
 
 ### Connect to Claude