Update dev-readme.md

dev-readme.md

@@ -184,12 +184,30 @@ init submodule
 git submodule update --init --recursive
 ```
 Install NodeJS first:
-
 ```bash
 curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.5/install.sh | bash
 source ~/.nvm/nvm.sh
 nvm install 18.19.0
 ```
+How to run 
+```
+// client
+cd web_src/web_client
+npm install
+npm run dev
+
+// server
+cd web_src/web_server
+npm install
+npm run dev
+```
+How to build
+```
+cd web_src
+bash pack.sh
+//Then you can find the binary web_src/web_server/release
+The default executable package path is in the/mnt/exec path, and you can replace its corresponding path with the server_app to complete the replacement.
+```
 
 
 # Config overlays in Raspberry Pi