Add file /.phpunit.result.cache to .gitignore, so that you can run unit tests without messing up your git repo.
Renamed file /tests/Codeception/acceptance.suite.yml to /tests/Codeception/acceptance.suite.dist.yml add /tests/Codeception/acceptance.suite.yml to .gitignore, so that you can use your own /tests/Codeception/acceptance.suite.yml without add it to the git repo.
Add folder /tests/Codeception/_output/ to .gitignore, so that you can run acceptance tests without messing up the git repo.
Thanks!