improve the docker script

README.md

@@ -19,7 +19,11 @@ It is a self-hosted monitoring tool like "Uptime Robot".
 
 ### Docker
 ```bash
-docker run -d --restart=always -p 3001:3001 louislam/uptime-kuma
+# Create a volume
+docker volume create uptime-kuma
+
+# Start the container
+docker run -d --restart=always -p 3001:3001 -v uptime-kuma:/app/data --name uptime-kuma louislam/uptime-kuma
 ```
 
 Browse to http://localhost:3001 after started.
@@ -27,7 +31,7 @@ Browse to http://localhost:3001 after started.
 Change Port and Volume
 
 ```bash
-docker run -d --restart=always -p <YOUR_PORT>:3001 -v <YOUR_DIR OR VOLUME>:/app/data louislam/uptime-kuma
+docker run -d --restart=always -p <YOUR_PORT>:3001 -v <YOUR_DIR OR VOLUME>:/app/data --name uptime-kuma louislam/uptime-kuma
 ```
 
 ### Without Docker