resolve git deprecation
resolve git deprecation

Resolves warning during build:

    empty strings as pathspecs will be made invalid in upcoming releases.
    please use . instead if you meant to match all paths

jumanjihouse/hooktftp-runtime,jumanjiman/docker-hooktftp,jumanjiman/docker-hooktftp,jumanjihouse/docker-hooktftp,jumanjihouse/docker-hooktftp