diff --git a/docker-compose.yml b/docker-compose.yml
index de44f35..7c97b17 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -23,3 +23,12 @@ services:
       - LIDARR__ENABLED=false
       - LIDARR__HOST=http://localhost:8686
       - LIDARR__APIKEY=APIKEY
+      ### example for multiple instances of same type
+      #- SONARR__0__NAME=NAME 1 (optional)
+      #- SONARR__0__ENABLED=false
+      #- SONARR__0__HOST=http://localhost:8989
+      #- SONARR__0__APIKEY=APIKEY
+      #- SONARR__1__NAME=NAME 2 (optional)
+      #- SONARR__1__ENABLED=false
+      #- SONARR__1__HOST=http://localhost:8989
+      #- SONARR__1__APIKEY=APIKEY