Every article tagged CI/CD, in one place.
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GitHub Actions runs automated workflows when things happen in your repository: a push, a pull request, a schedule or a manual click. The most common first use is CI: run tests on every change. Anatomy of a workflow Workflow - a YAML file in .github/workflows/...
A branching strategy is an agreement about how work flows into the main branch and out to users. The trend in recent years has been towards fewer, shorter-lived branches. GitHub Flow main is always deployable. Create a branch for each change. Open a pull reque...
Installing dependencies is often the slowest part of a CI run. Caching downloads between runs can cut minutes from every workflow. The easy way: built into setup actions - uses: actions/setup-node@v4 with: node-version: 22 cache: npm # also: yarn, pnpm - uses:...
Slow Docker builds usually re-download dependencies that haven't changed. BuildKit, the default builder in modern Docker, has features designed to stop that. 1. Order layers from least to most frequently changed COPY package.json package-lock.json ./ # changes...
When ten repositories have nearly identical CI files, every improvement must be made ten times. GitHub Actions offers two ways to share. Composite actions: share a group of steps # .github/actions/setup-app/action.yml name: Set up app description: Install Node...
A common pipeline: every push to main builds an image, tags it with the commit and pushes it to a registry, ready to deploy. The workflow name: Docker image on: push: branches: [main] tags: ['v*'] permissions: contents: read packages: write # push to ghcr.io j...
Running terraform apply from laptops leads to "who changed this?" moments and state conflicts. A CI workflow makes every change visible, reviewed and repeatable. The flow A pull request changes Terraform code. CI runs fmt , validate and plan , and shows the pl...
A CI pipeline that takes 25 minutes slows down every pull request. Most pipelines can be made several times faster with a few changes. 1. Cancel outdated runs concurrency: group: ci-${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true When you pus...
