diff --git a/docker-compose.yml b/docker-compose.yml
index 3c794e511..4696f50ac 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,7 +12,9 @@ services:
     environment:
       - TRUST_PROXY_HEADER=1
       - DB_URL=postgres://postgres:p0stgr3s@postgres:5432/logto
-      - ENDPOINT # Mandatory. Mapping env to the container.
+      # Mandatory for GitPod to map host env to the container, thus GitPod can dynamically configure the public URL of Logto;
+      # Or, you can leverage it for local testing.
+      - ENDPOINT
   postgres:
     image: postgres:14-alpine
     user: postgres