CI/CD automates testing and deployment so bugs are caught before they reach users. GitHub Actions brings this to any repository for free, and a first pipeline takes under an hour.

A workflow file in your repository tells GitHub what to run when code is pushed: check out the code, install dependencies, and run tests. Start with one job and one test command.

When a workflow fails, read the log from the bottom up and fix one thing at a time. Most beginner failures are missing dependencies or tests that only pass on a local machine.

Add deployment only after tests pass consistently, store credentials as repository secrets, and keep the pipeline fast so a green build stays meaningful.