diff --git a/README.md b/README.md
index e4b81a2..12d76fe 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,30 @@ Just edit the `application.yml` and rebuild the project with:
 
 `./gradlew clean bootRun`
 
-###  
+You can also pass the environment variables without editing the config files:
+
+`NEXTCLOUD_DLNA_SERVER_PORT=9999 ./gradlew clean bootRun`
+
+or, if you've already built the project and created the jar file:
+
+`NEXTCLOUD_DLNA_SERVER_PORT=9999 java -jar nextcloud-dlna-X.Y.Z.jar`
+
+Available env variables with their default values that you can overwrite:
+
+| env variable                 | default value  | description                                             |  
+|------------------------------|----------------|---------------------------------------------------------|
+| NEXTCLOUD_DLNA_SERVER_PORT   | 8080           | port on which the contentController will listen         |
+| NEXTCLOUD_DLNA_INTERFACE     | eth0           | interface the server will be listening on               |
+| NEXTCLOUD_DLNA_FRIENDLY_NAME | Nextcloud-DLNA | friendly name of the DLNA service                       |
+| NEXTCLOUD_DATA_DIR           |                | nextcloud installation directory (that ends with /data) |
+| NEXTCLOUD_DB_HOST            | localhost      | nextcloud database host                                 |
+| NEXTCLOUD_DB_PORT            | 3306           | nextcloud database port                                 |
+| NEXTCLOUD_DB_NAME            | nextcloud      | nextcloud database name                                 |
+| NEXTCLOUD_DB_USER            | nextcloud      | nextcloud database username                             |
+| NEXTCLOUD_DB_PASS            | nextcloud      | nextcloud database password                             |
+
+
+### Code used 
 
 Some java code was taken from https://github.com/haku/dlnatoad
 and https://github.com/UniversalMediaServer/UniversalMediaServer converted to Kotlin with upgrade to jupnp instead of