Update README.md

README.md

@@ -1,5 +1,14 @@
 # Docker Mods
 
+## Docker mods for linuxserver.io containers to inject theme.park stylesheets.
 
-# Docker mods for linuxserver.io containers to inject theme.park stylesheets.
+Add -e `DOCKER_MODS=gilbn/theme.park:<app>` e.g. `gilbn/theme.park:sonarr`
+
+These are the **default** values for all envs. 
+
+| Environment Variable | Example Value | Description |
+| -------------------- | ------------- | ----------- |
+| `DOCKER_MODS` | `gilbn/theme.park:<app>` | Replace \<app> |
+| `TP_DOMAIN` | `gilbn.github.io` | Defaults to the example. |
+| `TP_THEME` | `organizr-dark` | Defaults to the example. |