[launcher] Fix override env var if entry exists

Signed-off-by: Mykhailo Lohvynenko <Mykhailo_Lohvynenko@epam.com>

Author: mlohvynenko

launcher/spec.go

@@ -544,8 +544,6 @@ func (launcher *Launcher) createRuntimeSpec(instance *runtimeInstanceInfo) (*run
 	spec.bindHostDirs(launcher.config.WorkingDir)
 	spec.setNamespacePath(runtimespec.NetworkNamespace, launcher.networkManager.GetNetnsPath(instance.InstanceID))
 	spec.mergeEnv(createAosEnvVars(instance))
-	instance.overrideEnvVars = launcher.getInstanceEnvVars(instance.InstanceInfo)
-	spec.mergeEnv(instance.overrideEnvVars)
 
 	if instance.StatePath != "" {
 		absStatePath := launcher.getAbsStatePath(instance.StatePath)
@@ -583,6 +581,9 @@ func (launcher *Launcher) createRuntimeSpec(instance *runtimeInstanceInfo) (*run
 		return nil, err
 	}
 
+	instance.overrideEnvVars = launcher.getInstanceEnvVars(instance.InstanceInfo)
+	spec.mergeEnv(instance.overrideEnvVars)
+
 	fileName := filepath.Join(instance.runtimeDir, runtimeConfigFile)
 
 	log.WithFields(instanceLogFields(instance, log.Fields{"fileName": fileName})).Debug("Save runtime spec")