Retry:

 retry:
   max: 2
   when:
     - runner_system_failure
     - stuck_or_timeout_failure
     - job_execution_timeout
     - scheduler_failure

https://docs.gitlab.com/ee/ci/yaml/#retrywhen

retries:

• GitLab CI, variables, templates, executors, .gitlab-ci.yml, .gitlab/, Credential helpers, notifications, pipeline editor, Keyword reference, Changelog, ContainersNotReady, GitLab environments