diff --git a/docker-compose.yml b/docker-compose.yml
index 8854ce0..83559ee 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,10 +12,14 @@ services:
     # replace the context definition with this:
     # context: https://github.com/Awesome-Technologies/synapse-admin.git
 
-    # if you're building on an architecture other than amd64, make sure
-    # to define a maximum ram for node. otherwise the build will fail.
     # args:
-    #   - NODE_OPTIONS="--max_old_space_size=1024"
+      # if you're building on an architecture other than amd64, make sure
+      # to define a maximum ram for node. otherwise the build will fail.
+      # - NODE_OPTIONS="--max_old_space_size=1024"
+      # default is /
+      # - PUBLIC_URL=/synapse-admin
+      # You can use a fixed homeserver, so that the user can no longer define it himself
+      # - REACT_APP_SERVER="https://matrix.example.com"
     ports:
       - "8080:80"
     restart: unless-stopped