Spawner ready

Co-authored-by: Roberto Abdelkader Martínez Pérez <robertomartinezp@gmail.com>

internal/server/user/spawn.go

@@ -5,18 +5,29 @@ import (
 	"os"
 	"os/exec"
 
+	"github.com/google/shlex"
+
 	"github.com/BBVA/kapow/internal/server/model"
 )
 
 func spawn(h *model.Handler, out io.Writer) error {
-	cmd := exec.Command(h.Route.Entrypoint)
+	args, err := shlex.Split(h.Route.Entrypoint)
+	if err != nil {
+		return err
+	}
+
+	if h.Route.Command != "" {
+		args = append(args, h.Route.Command)
+	}
+
+	cmd := exec.Command(args[0], args[1:]...)
 	if out != nil {
 		cmd.Stdout = out
 	}
 	cmd.Env = append(os.Environ(), "KAPOW_URL=http://localhost:8081")
 	cmd.Env = append(cmd.Env, "KAPOW_HANDLER_ID="+h.ID)
 
-	err := cmd.Run()
+	err = cmd.Run()
 
 	return err
 }