updated readme

README.md

@@ -6,3 +6,17 @@
 | José Maria Castro         | 202006963 | 
 | Pedro Miguel Nunes        | 202004714 |
 | Pedro Alexandre Silva     | 202004985 | 
+
+## How to run
+
+In order to have all of the different components of the project interact nicely we are using docker composer, as such to run only the following commands are needed.
+
+```sh
+docker compose build && docker compose up
+```
+
+## Some limitations
+
+We are currently only exposing a maximum of 5 endpoints from our  Shopping List Services in ``docker-compose.yml`` (in the cloud service) and on the NGINX config, ``nginx.conf`` (in the upstream backends).
+
+Scaling the number of database nodes is also limited by disk space.