diff --git a/example.env b/example.env
index 25a62359..37c9cfa7 100644
--- a/example.env
+++ b/example.env
@@ -6,6 +6,8 @@ POSTGRES_PASSWORD=changeme
 BUILD_INFO=latest
 
 # Port to expose HTTP service
+# Set to 127.0.0.1:8080 if you wish to reverse-proxy the docker's port,
+# otherwise the port specified here will be publicly accessible
 PORT=8080
 
 # Directory to store image data