Gems are not allowed to contain itself (as a gem package). When vendoring the gem it raises the following warning:
The gemspec at ./vendor/docker-compose-api/docker-compose-api.gemspec is not valid. The validation error was 'docker-compose-api-1.0.5 contains itself (docker-compose-api-1.0.5.gem), check your files list'
Gems are not allowed to contain itself (as a gem package). When vendoring the gem it raises the following warning: