401 — Docker in CI/CD Pipelines

Integrate Docker into continuous integration and deployment workflows. Build, test, scan, and deploy containers automatically with GitHub Actions, GitLab CI, and Jenkins.

Learning Objectives

Build Docker images in CI/CD pipelines

Run automated tests in containers

Scan images for security vulnerabilities

Push images to container registries

Implement deployment automation

Step 1

CI/CD with Docker basics

Understand how Docker fits into modern CI/CD workflows.

Commands to Run

mkdir cicd-demo && cd cicd-demo

git init

cat > README.md << 'EOF'
# CI/CD Docker Demo

This project demonstrates Docker integration in CI/CD pipelines.
EOF

git add README.md && git commit -m "Initial commit"

What This Does

Docker enables consistent builds across environments. CI/CD pipelines build images, run tests in containers, scan for vulnerabilities, and deploy to production.

Expected Outcome

A Git repository initialized. This will be the foundation for CI/CD pipeline examples.

Pro Tips

1
Docker ensures "works on my machine" becomes "works everywhere"
2
Build once, deploy anywhere philosophy
3
Containers make testing environments identical to production
4
Image tags enable version control for deployments
5
Common CI/CD platforms: GitHub Actions, GitLab CI, Jenkins, CircleCI