feat: unity catalog getting started instructions added

Author: HelloJowet

docs/data_engineering/data_lakehouse/unity_catalog.md

@@ -0,0 +1,18 @@
+# Unity Catalog
+
+## Getting started (Docker)
+
+1. Clone repository:
+   ```sh
+   git clone https://github.com/unitycatalog/unitycatalog/tree/main
+   ```
+2. Start server:
+   ```sh
+   docker build -t unity_catalog_server .
+   docker run -it -p 8080:8080 unity_catalog_server
+   ```
+3. Start UI:
+   ```sh
+   docker build -t unity_catalog_ui --build-arg PROXY_HOST=YOUR_IP_ADDRESS ui/.
+   docker run -it -p 3000:3000 unity_catalog_ui
+   ```