fix port

backend/Dockerfile

@@ -17,6 +17,6 @@ WORKDIR /app
 
 COPY --from=build /app/main .
 
-EXPOSE 8080
+EXPOSE 1308
 
 CMD ["./main"]

backend/main.go

@@ -56,5 +56,5 @@ func main() {
 		}
 	})
 
-	r.Run() // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080")
+	r.Run("0.0.0.0:1308") // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080")
 }