feat: add Docker build and deployment workflow

main.go

@@ -1,12 +1,19 @@
 package main
 
 import (
+	"fmt"
 	"k8s-example/hello"
 	"net/http"
 )
 
+var (
+	version = "1.0.0-local"
+)
+
 func main() {
 	http.HandleFunc("/hello", hello.Handler)
+
+	fmt.Println("server on :8800, version:", version)
 	err := http.ListenAndServe(":8800", nil)
 	if err != nil {
 		panic(err)