From 9b140d23506474660ed240631610e0373433de06 Mon Sep 17 00:00:00 2001
From: Timothy Miller <github@t4stack.com>
Date: Wed, 25 Mar 2026 13:29:37 -0400
Subject: [PATCH] Document CONFIG_PATH env var for config location

---
 README.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/README.md b/README.md
index f347e02..67546bc 100755
--- a/README.md
+++ b/README.md
@@ -363,6 +363,21 @@ Some ISP provided modems only allow port forwarding over IPv4 or IPv6. Disable t
 
 ### ⚙️ Config Options
 
+By default, the legacy config file is loaded from `./config.json`. Set the `CONFIG_PATH` environment variable to change the directory:
+
+```bash
+CONFIG_PATH=/etc/cloudflare-ddns cloudflare-ddns
+```
+
+Or in Docker Compose:
+
+```yml
+environment:
+  - CONFIG_PATH=/config
+volumes:
+  - /your/path/config.json:/config/config.json
+```
+
 | Key | Type | Default | Description |
 |-----|------|---------|-------------|
 | `cloudflare` | array | required | List of zone configurations |