Golang Podman API ignores existing cache

[A2va]

I have this Go code in my project. The issue is that, it doesn't use the cached layers the second time unlike when using the command line where it prints Using cache....

func buildImage(c context.Context) error {
	version := config.GetVersion()
	targetTag := fmt.Sprintf("lsw-v1:%s", version.ShortCommit)

        noCache := false
        remove := false
        layers := true
	

	dockerfilePath, err := getDockerfile()
	if err != nil {
		return err
	}

	contextDir := filepath.Dir(dockerfilePath)
	dockerfileName := filepath.Base(dockerfilePath) 

	buildOptions := types.BuildOptions{
		ContainerFiles: []string{dockerfileName},
		BuildOptions: buildahDefine.BuildOptions{
			NoCache:                noCache,
			RemoveIntermediateCtrs: remove,
			Output:                 targetTag,
			ContextDirectory:       contextDir,
			Layers:                 layers,
		},
	}

	// Notice we pass []string{dockerfileName} instead of dockerfilePath
	_, err = images.Build(c, []string{dockerfileName}, buildOptions)
	if err != nil {
		return err
	}

	return nil
}

[A2va]

It was resolved when setting OutputFormat in the build option

buildOptions := types.BuildOptions{
		ContainerFiles: []string{dockerfileName},
		BuildOptions: buildahDefine.BuildOptions{
			NoCache:                noCache,
			RemoveIntermediateCtrs: remove,
			Output:                 targetTag,
			ContextDirectory:       contextDir,
			Layers:                 layers,
+           OutputFormat: buildahDefine.OCIv1ImageManifest, // or buildahDefine.Dockerv2ImageManifest
		},
	}