diff --git a/FAQ.md b/FAQ.md
index 2665fea..add8231 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -1190,4 +1190,21 @@ LIMIT_SPEED=64
 ```
 
 or higher values you want.
-Then restart the container. You can see the change from the [logs of `hbbr`](https://github.com/rustdesk/rustdesk/wiki/FAQ#logs-of-hbbs-and-hbbr-rustdesk-server).
\ No newline at end of file
+Then restart the container. You can see the change from the [logs of `hbbr`](https://github.com/rustdesk/rustdesk/wiki/FAQ#logs-of-hbbs-and-hbbr-rustdesk-server).
+
+You can also set environment variables in Docker Compose as described here: https://docs.docker.com/compose/how-tos/environment-variables/set-environment-variables/.
+
+e.g.
+
+```
+services:
+  hbbs:
+    ...
+
+  hbbr:
+    ...
+    environment:
+      SINGLE_BANDWIDTH: 128
+      LIMIT_SPEED: 64
+```
+