GitLab

* explicitly set the graph format.

* fix.

* fix.

* fix launch script.

* fix readme.
Co-authored-by: Zheng <dzzhen@3c22fba32af5.ant.amazon.com>
Co-authored-by: xiang song(charlie.song) <classicxsong@gmail.com>
Co-authored-by: Ubuntu <ubuntu@ip-172-31-71-112.ec2.internal>