Merge pull request #24 from sambaiz/feature/git-global

set git global config

Merge pull request #23 from sambaiz/feature/fix_merge_target

fix merge target

Merge pull request #22 from sambaiz/feature/failed_to_checkout

fix problem to fail checkout

Merge pull request #21 from sambaiz/feature/run_on_docker

Migrate operation function to ECS

Merge pull request #20 from sambaiz/feature/check_commmand_exitcode

improve logging