First dnf test

usr/README.md

@@ -0,0 +1,18 @@
+# The usr directory
+
+This directory contains all files specific to the local network(s) (host and user profiles, machines, configuration, add-ons, etc.).
+
+> [!NOTE]
+> This is where you can modify files.
+
+- **config.yaml:** the main configuration file
+- **homes:** additional or overloaded user profiles
+- **modules:** additional or completed modules + host profiles
+- **machines:** machine-specific configurations (hardware, etc.)
+- **secrets:** your keys and passwords (sops)
+
+> [!TIP]
+> **Multiple network declaration:**
+> 
+> The `config.yaml` contains a networks, hosts and users declarations. To manage several networks, follow the comments
+> in the configuration file.