CI/CD from Scratch

A complete, beginner-to-advanced course on CI/CD with GitHub Actions.

Learn CI/CD from the ground up: what it is, how pipelines work, and how to build, test, containerize, and deploy real projects with GitHub Actions - then make them fast, cheap, and reliable. A free, structured course you can follow lesson by lesson.

Module 1 - Foundations

What CI/CD is and why it matters.

CI/CD in your workflowFollow a change from commit to production: how CI/CD hooks into the everyday commit, pull request, merge, and

Module 7 - Deployment & CD

Environments, approvals, OIDC, deploy strategies.

Environments & approvalsConfigure GitHub Actions environments with required reviewers, wait timers, and environment secrets to add

Module 8 - Speed, cost & reliability

Make pipelines fast, cheap, and self-healing.

Choosing a CI runnerCompare GitHub-hosted, self-hosted, and managed CI runners on cost, maintenance, and speed, and see why

Module 9 - Security & best practices

Secrets, OIDC, least privilege, supply chain.

Pinning actionsStop running unvetted code in CI: pin third-party GitHub Actions to a full commit SHA, vet what you depend

Explore other topics

GitHub ActionsWorkflow, runner, and YAML errors - diagnosed and fixed. Node.js & npmnpm, yarn, and pnpm failures in CI - solved. DockerBuild, run, compose, and registry errors - explained. Pythonpip, poetry, venv, and pytest failures - fixed. Java & JVMMaven, Gradle, and JVM failures in CI - resolved. GoGo build, module, and test failures - diagnosed.