style: readme update

Readme.md

@@ -1,5 +1,28 @@
 # Meet the countries - Backend
 
-## Get started
+## Getting Started on the app
 
-...
+First, open docker and run compose:
+
+```bash
+docker compose up -d
+```
+
+Second, make sure to have the dependencies installed and run the dev server:
+
+```bash
+yarn install
+yarn dev
+```
+
+Open [http://localhost:8000/graphql](http://localhost:3000) with your browser to see the result.
+
+In order to run lint, do:
+```bash
+yarn lint
+```
+
+## Requirements
+1. Node 18+
+2. Yarn
+3. Docker