diff --git a/RockyLinux.md b/RockyLinux.md
index fc9abd9..597b8db 100644
--- a/RockyLinux.md
+++ b/RockyLinux.md
@@ -52,8 +52,17 @@ umount /data
 cryptsetup luksClose data
 ```
 
-# Docker
+# Change docker data Directory
 
 ```sh
+docker info -f '{{ .DockerRootDir }}' # /var/lib/docker
+systemctl stop docker.socket
+systemctl stop docker
+echo '{"data-root": "/data/docker"}' >  /etc/docker/daemon.json
+systemctl start docker
+systemctl start docker.socket
+docker info -f '{{ .DockerRootDir }}' # /data/docker
+```
+
+
 
-```
\ No newline at end of file