Function runConfigInterpolate

cmd/compose/config.go:205–254

(ctx context.Context, dockerCli command.Cli, opts configOptions, services []string)

}

func runConfigInterpolate(ctx context.Context, dockerCli command.Cli, opts configOptions, services []string) ([]byte, error) {
	backend, err := compose.NewComposeService(dockerCli)
	if err != nil {
		return nil, err
	}

	project, err := opts.ToProject(ctx, dockerCli, backend, services)
	if err != nil {
		return nil, err
	}

	if opts.resolveImageDigests {
		project, err = project.WithImagesResolved(compose.ImageDigestResolver(ctx, dockerCli.ConfigFile(), dockerCli.Client()))
		if err != nil {
			return nil, err
		}
	}

	if !opts.noResolveEnv {
		project, err = project.WithServicesEnvironmentResolved(true)
		if err != nil {
			return nil, err
		}
	}

	if !opts.noConsistency {
		err := project.CheckContainerNameUnicity()
		if err != nil {
			return nil, err
		}
	}

	if opts.lockImageDigests {
		project = imagesOnly(project)
	}

	var content []byte
	switch opts.Format {
	case "json":
		content, err = project.MarshalJSON()
	case "yaml":
		content, err = project.MarshalYAML()
	default:
		return nil, fmt.Errorf("unsupported format %q", opts.Format)
	}
	if err != nil {
		return nil, err
	}
	return content, nil
}

// imagesOnly return project with all attributes removed but service.images
func imagesOnly(project *types.Project) *types.Project {