Update README.md

README.md

 # flat-manager
+FLAT MANAGER usage for production environment:
 
 PosgreSQL user and password need to be defined at .env-postgres file
+
+after you ended setting up the DB file with the user and pass, you can run
+the docker compose like this:
+```
+docker-compose up -d flat-manager
+```
+
+This the only setup for need for flat-manager to make it run.
+
+In order to reach the repo and use it, it will need a domain together with a web
+server set it in front of the compose. 
+
+all the configurations neet to be placed at config.json file
+there you can place the repo name set'ed in the DNS and in the webserver.