diff --git a/.gitignore b/.gitignore
index 1b72935..a6d1986 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /backend
+/main
diff --git a/README.md b/README.md
index 4d5ac8e..2de5bef 100644
--- a/README.md
+++ b/README.md
@@ -14,4 +14,7 @@ go mod tidy
 ## run
 go build
 
-./backend
\ No newline at end of file
+./backend
+
+## compile
+GOOS=linux GOARCH=amd64 go build -o main
\ No newline at end of file
diff --git a/main.go b/main.go
index f7bd3e6..bfbaf51 100644
--- a/main.go
+++ b/main.go
@@ -5,5 +5,5 @@ import "github.com/gin-gonic/gin"
 func main() {
 	router := gin.Default()
 	router.GET("/ping", ping)
-	router.Run()
+	router.Run(":8000")
 }