Add update command

    arrow("Image %s v%s" % (pkg.name, pkg.version))

    pkg.show(verbose=args.detail)

def c_update(parser, args):

    '''

    Build and update image on repo

    '''

    c_build(parser, args)

    simg = SourceImage(args.path)

    repoman = load_repositories(args)

    if len(repoman) == 0:

        raise Exception("No repository selected")

    elif len(repoman) > 1:

        raise Exception("Please select only one repository")

    repo = repoman[0]

    image = simg.description["name"]

    version = simg.description["version"]

    if repo.has(image, version):

        repo.delete(image, version)

    pkg = PackageImage(simg.image_name)

    repo.add(pkg, delete=not args.preserve)

def c_cat(parser, args):

    '''

    Display image's file(s)

p_install.add_argument("image", help="image to install (path or name)")

p_install.set_defaults(func=c_install, subparser=p_install)

# update command parser

p_update = subparsers.add_parser("update", help=c_update.__doc__.lower())

p_update.add_argument('-f', "--force", action="store_true", default=False,

                     help="overwrite existing image")

p_update.add_argument('-c', "--no-check", action="store_true", default=False,

                     help="do not check compilation before adding scripts")

p_update.add_argument('-p', "--preserve", action="store_true", default=False,

                   help="don't remove image after adding to database")

p_update.add_argument("path", nargs="?", default=".")

p_update.set_defaults(func=c_update)

# cat command parser

p_cat = subparsers.add_parser("cat", help=c_cat.__doc__.lower())

p_cat.add_argument("-v", "--image-version", type=int, default=None,