GitHub Actions with Docker - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is GitHub Actions?

GitHub Actions is a tool that helps automate tasks like testing and deploying code when you push changes to your GitHub repository.

beginner

How does Docker fit into GitHub Actions?

Docker lets you package your app and its environment into a container. GitHub Actions can build and run these Docker containers automatically during workflows.

beginner

What is a workflow file in GitHub Actions?

A workflow file is a YAML file in your repo that tells GitHub Actions what steps to run and when, like building a Docker image after code changes.

intermediate

What does the 'docker/build-push-action' do in a GitHub Actions workflow?

It builds a Docker image from your code and can push it to a container registry like Docker Hub automatically.

beginner

Why use GitHub Actions with Docker instead of manual builds?

It saves time by automating builds and tests, ensures consistency, and helps catch errors early before deploying your app.

What file format is used to define GitHub Actions workflows?

A XML

B JSON

C TXT

D YAML

GitHub Actions workflows are defined using YAML files, which are easy to read and write.

Which GitHub Actions step is commonly used to build and push Docker images?

A actions/checkout

B actions/setup-node

C docker/build-push-action

D actions/upload-artifact

The 'docker/build-push-action' is designed to build Docker images and push them to registries.

What triggers a GitHub Actions workflow by default?

A A push to the repository

B Opening a new issue

C Deleting a branch

D Viewing the repository

Workflows often trigger automatically when you push code changes to the repository.

Why use Docker containers in CI/CD pipelines?

A To slow down the build process

B To run code in a consistent environment

C To avoid using version control

D To delete code automatically

Docker containers ensure your app runs the same way everywhere by packaging all dependencies.

Where can Docker images be pushed from GitHub Actions?

A Docker Hub or other container registries

B GitHub Issues

C GitHub Wiki

D Local text files

Docker images are pushed to container registries like Docker Hub for storage and sharing.

Explain how you would set up a GitHub Actions workflow to build and push a Docker image when code is pushed.

Think about the steps from code push to Docker image upload.

Describe the benefits of using GitHub Actions with Docker in a software project.

Consider how automation and containers improve development.