Checks if your .gitlab-ci.yml file is valid.
Thanks to @FGRibreau for the post about validating .gitlab-ci.yml files!
yarn global add gitlab-ci-validate
npm i -g gitlab-ci-validate
# It will try to find if .gitlab-ci.yml is present on the current folder if no file path is provided
$ gitlab-ci-validate <file-path>
MIT © Léo Pradel
