* commit '3e181e140b7ebc056cdbfd76cfff4cc7c8b0239b':
  upgraded core;

* commit '2255ab620d76c8e36c68620f1952ca5339b9c018':
  upgraded submodules;

* commit '5a895f61620c0666ac274b40764f57897c015ed2':
  add docker-sdk;
  add the docker's module to optimize the constructure of docker-demo;
  update the log4j2.xml;
  add docker-sdk;
  add docker-sdk;
  modify the md for: how to generate the image;
  check the zip and sdk.jar;
  add the dos2unix for win;
  add docker-sdk;
  add docker-sdk;
  add docker-sdk;
  add the docker-demo submodule;