diff --git a/docker/README.md b/docker/README.md
index b97fbe9..13a1462 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -25,10 +25,6 @@ chmod +x /usr/local/bin/docker-compose
 sudo chown -R root:docker /data/docker
 sudo chmod -R 770 /data/docker
 
-{
-  "data-root": "/data/docker"
-}
-
 
 ```shell
     sudo apt-get update
@@ -46,7 +42,36 @@ sudo chmod -R 770 /data/docker
     echo "NVIDIA Docker 已安装。"
 ```
 
+## 更改镜像目录
+
+vim /etc/docker/daemon.json
+
+{
+  "data-root": "/data/docker"
+}
+
 ## 换源
 
 https://www.kelen.cc/dry/docker-hub-mirror
 
+添加换源的mirror：
+
+```json
+{
+    "data-root": "/data/docker",
+    "features": {
+        "buildkit": true
+    },
+    "registry-mirrors": [
+        "https://hub.rat.dev",
+        "https://dockerhub.icu",
+        "https://docker.unsee.tech"
+    ],
+    "runtimes": {
+        "nvidia": {
+            "args": [],
+            "path": "nvidia-container-runtime"
+        }
+    }
+}
+```
\ No newline at end of file