Build container manifest

ContainerManifest.cs

 public class ContainerManifest
    {
        public ContainerManifest(string rootPath)
        {
            _rootPath = rootPath;
            Files = new List<string>();
            TraverseDirectory(rootPath);
        }

        public override string ToString()
        {
            return JsonConvert.SerializeObject(this);
        } 

        private readonly string _rootPath;

        private void TraverseDirectory(string path)
        {
            var files = Directory.GetFiles(path);
            if (files.Length > 0)
            {
                foreach (var file in files)
                {
                    var realtivePath = new Uri(_rootPath)
                        .MakeRelativeUri(new Uri(file));

                    Files.Add(
                        realtivePath
                            .ToString()
                            .Replace('/', Path.DirectorySeparatorChar));
                }
            }

            var directories = Directory.GetDirectories(path);
            foreach (var directory in directories)
            {
                TraverseDirectory(directory);
            }
        }

        public List<string> Files { get;}
    }