docs: tree in README

README.md

@@ -40,8 +40,25 @@ Instead of adopting Kubernetes with GitOps tooling (e.g., Argo CD) or alternativ
 
 ## 📋 Prerequisites
 
-Application is distributed via Docker image, so only Docker and Docker Compose are required to be installed on the host
+- Docker and Docker Compose installed on the host
-system.
+- YAMLs repository in proper format:
+```
+.
+|- compose/
+|  |- some-service-1/
+|  |  `- docker-compose.yaml
+|  `- some-service-2/
+|     `- docker-compose.yaml
+|- config/
+|  `- put-your-kdbx-here.kdbx
+`- files/
+   |- some-service-1/
+   |  |- service-1-file-1
+   |  `- service-1-file-2
+   `- some-service-2/
+      |- service-2-file-1
+      `- service-2-file-2
+```
 
 ## ⚙️ Configuration