Update README.md w/ docker

Author: daniellrgn

README.md

@@ -36,3 +36,17 @@ npm run build
 You can preview the production build with `npm run preview`.
 
 > To deploy your app, you may need to install an [adapter](https://kit.svelte.dev/docs/adapters) for your target environment.
+
+## Docker
+
+Environment
+
+```bash
+cp default.env .env
+```
+
+Starting the docker container
+
+```bash
+docker-compose build && docker-compose up -d
+```