TL;DR — CI/CD Pipeline

Design a CI/CD (Continuous Integration / Continuous Deployment) pipeline system similar to GitHub Actions or GitLab CI. Developers push code to a git repository, which triggers automated build, test, and deploy workflows. The system must orchestrate multi-step pipelines with dependencies between steps, run builds in isolated environments, and deploy to multiple environments (staging, canary, production) with rollback capabilities. Key features: Trigger pipelines on git events: push, pull request, tag, schedule (cron). Define pipelines as YAML with multi-step DAG (steps with dependencies).