✨feature: Add docker support

README.md

@@ -68,6 +68,31 @@ npm run dev
 
 Open http://localhost:5173 in your browser.
 
+### Option 3: Run with Docker (Centralized Server)
+
+This runs Ironpad as a single container that serves both API and frontend on port `3000`.
+
+```bash
+# Build and start in the background
+docker compose up -d --build
+
+# View logs
+docker compose logs -f
+```
+
+Then open:
+
+- `http://localhost:3000` from the same machine, or
+- `http://<your-server-ip>:3000` from another device on your network.
+
+Data persists in `./data` on the host via the compose volume mapping.
+
+To stop:
+
+```bash
+docker compose down
+```
+
 ## Tech Stack
 
 ![Tech Stack](docs/graphics/tech-stack.png)
@@ -121,6 +146,9 @@ Read about the method:
 |---------|---------|-------------|
 | Data directory | `data/` next to executable | Override with `IRONPAD_DATA_DIR` env var |
 | Backend port | 3000 (auto-increments to 3010) | Dynamic port selection |
+| Backend host | `127.0.0.1` | Override with `IRONPAD_HOST` (use `0.0.0.0` for Docker/server access) |
+| Fixed port | disabled | Set `IRONPAD_PORT` to force a specific port |
+| Disable tray mode | `false` | Set `IRONPAD_DISABLE_TRAY=1` to run headless in production static mode |
 | Auto-commit | Every 60 seconds | Git commits when changes exist |
 | Auto-save | 1 second debounce | Frontend saves after typing stops |