Update README.md

README.md

@@ -14,7 +14,7 @@ go run .\url-proxy.go -addr :8888
 
 ### Build
 ```
-docker run --rm -v "$PWD":/srv -w /srv golang:1.18 ./build.sh
+docker run --rm -v "$PWD":/srv -w /srv golang:1.18 ./build.sh dev
 ```
 
 ## Docker
@@ -26,5 +26,22 @@ docker build -t ztj1993/url-proxy:latest .
 
 ### Run
 ```
-docker run -d --restart=always -p 8888:8888 ztj1993/url-proxy:latest
+docker run -d --name=uproxy --restart=always -p 8888:8888 ztj1993/url-proxy:latest
+```
+
+## Forward
+
+Support forwarding to other url-proxy programs.
+
+支持转发到其它的 url-proxy 程序。
+
+forwarding.conf
+```
+github.com http://192.168.100.1:8888
+google.com http://192.168.99.1:8888
+```
+
+run:
+```
+go run .\url-proxy.go -forward ./forwarding.conf
 ```