Add minio admin to the containers

README.md

@@ -4,7 +4,7 @@ WIP project
 
 ## Setup dev environment
 ```
-mkdir -p storage/postgres storage/synapse
+mkdir -p storage/postgres storage/synapse storage/minio
 docker compose up
 ```
 
@@ -12,8 +12,11 @@ URLs:
 * Element: http://localhost:8080/
 * Synapse: http://localhost:8448/
 * OpenID configuration: http://127.0.0.1:9001/dex/.well-known/openid-configuration
+* Minio console: http://localhost:9002/
 
 Auto-created Matrix accounts:
 
 * `admin1` : `admin1`
-* `user1` : `user1`
+* `user1` : `user1`
+
+Minio administration credentials: `minioadmin` : `minioadmin`