Default dir is the workspace of this project. For exmaple, if you just fill in "Compose.yml", Jenkins will use
../jobs/${project}/workspace/Compose.yml to deploy your application. So you can upload the compose file to
directory ../jobs/${project}/workspace.
Or locate the compose file with yout code package. For example, you can fill in "code/Compose.yml", "code" is your
code package name.
Note: DO NOT use '/' at the beginning, just begin with the file name or direcotory name.