feat: added env param PORT

README.md

@@ -25,7 +25,7 @@ curl -X POST http://localhost:8989/calculate \
 ### Or
 3. Use integration test:
 ```bash
-go test -v
+go test -v ./...
 ```
 output should be:
 ```txt

cmd/go-ks/main.go

@@ -1,20 +1,28 @@
 package main
 
 import (
+	"fmt"
 	"log"
 	"net/http"
+	"os"
 
 	"github.com/Nikolay200669/go-ks/internal/app/application"
 	iface "github.com/Nikolay200669/go-ks/internal/app/interfaces/http"
 )
 
 func main() {
+	port := os.Getenv("PORT")
+	if port == "" {
+		port = "8989"
+	}
+	addr := fmt.Sprintf(":%s", port)
+
 	// Initialize the CalculateService
 	calculateService := &application.CalculateService{}
 
 	// Configure the router
 	router := iface.SetupRouter(calculateService)
 
 	// Run the server
-	log.Fatal(http.ListenAndServe(":8989", router))
+	log.Fatal(http.ListenAndServe(addr, router))
 }