30 captures

03 May 2020 - 15 Jan 2024

Mar	APR	May
	11
2020	2021	2022

success

fail

About this capture

COLLECTED BY

Collection: Common Crawl

Web crawl data from Common Crawl.

TIMESTAMPS

The Wayback Machine - http://web.archive.org/web/20210411102647/https://lab.github.com/githubtraining/github-actions:-write-docker-container-actions

Learning Lab For Organizations Sign in

GitHub Actions: Write Docker container actions

The GitHub Training Team Learn how to write your own GitHub Docker container action! This course will empower you to begin automating customized tasks unique to your workflow. Start free course Join 751 others! social preview

GitHub Actions is a powerful platform that empowers your team to go from code to cloud all from the comfort of your own repositories. This course will teach you the skills needed to begin using and customizing Docker container based actions to fit your unique workflow scenarios.

What you'll learn

After completing this course, you will be able to: ●Consume actions within a workflow file ●Create custom Docker container based actions ●Create actions in your programming language of choice ●Leverage an external API within an action ●Set and use input parameters for actions ●Publish your newly created action to the marketplace You'll know the answers to questions like: ●What is a workflow? ●What are actions? ●What is action metadata? ●What is a Dockerfile? ●What are GitHub Actions capable of? ●What programming languages can I write GitHub Actions in? ●How do I publish an action? ●How do I customize my action's behavior based on inputs?

What you'll build

In this course you will build three actions that each accomplish different tasks designed to demonstrate the flexibility of creating and consuming Docker Based Actions. Hello, world! You will start with the traditional "Hello, world!" program which will teach you where to find the output of a workflow run. You will then modify this "Hello World!" action to accept input parameters which allow the action to be more dynamic. This action will be written using the Go programming language. Cat facts You will write an action that call upon an external API to retrieve a fact about cats and prints it to the workflows output. You will then modify this cat fact action to set the retrieved data as output for another action in the workflow to consume. This action will be written using the Python programming language. Issue maker You will open an issue in your repository making the cat fact available to everyone. You will learn how to use the output of previous actions as input for current actions in this step. This action will be written using the JavaScript programming language.

Prerequisites

We recommend you first take the following courses on Learning Lab: ●GitHub Actions: Hello World Since this is a course on Docker based actions, having a basic understanding of Docker is recommended.

Projects used

●GitHub Actions Toolkit, a multipurpose JavaScript library for writing actions ●Docker, a container engine ●Python, an interpreted, object-oriented, high-level programming language ●Go, Go is an open source programming language that makes it easy to build simple, reliable, and efficient software ●Requests, an elegant and simple HTTP library for Python

Audience

Developers, DevOps Engineers, students, teams

Steps to complete this course 22

Setup a workflow file

Create a pull request to add a workflow

Edit the current workflow

Remove boilerplate steps from my-workflow.yml

Add an action reference to the workflow

Reference our custom action from my-workflow.yml

Create the action metadata

Create an action.yml file and add necessary metadata

Write the Hello World source code

Create main.go containing the Hello World source code

Create the action's `Dockerfile`

Create a Dockerfile containing the Docker instructions

Add input parameters to Hello World's metadata

Update action.yml to accept input parameters for Hello World

Use input parameters in the source code

Extend Hello World's source code to accept the input parameters

Use input parameters in the workflow

Assign values to the newly created input parameters in my-workflow.yml

Explore your input parameters

View the results of changing input parameters

Setting up the next action

Comment out the lines in the workflow to prevent unwanted runs

Add metadata to the cat-fats action

Create the cat-facts metadata file

Fetch a cat fact

Create the Python source code for the cat-fats action

Add Python dependencies

Create requirements.txt with your Python dependencies

Add the cat-fact `Dockerfile`

Create Dockerfile for the cat-fat action

Use the cat-fat action

Restore the workflow file

Get ready to purr

Trigger a cat fact

Reference the issue-maker action

Reference issue-maker in the my-workflow.yml

Add dependencies for issue-maker action

Add package.json to issue-maker

Create the issue-maker's action metadata

Add action.yml for issue-maker

Add the issue-maker action's source code

Add src/index.js for issue-maker

Add the issue-maker action's `Dockerfile`

Create Dockerfile for issue-maker

Share this course

Average time to complete

268 minutes

Free

All public courses on Learning Lab are free.

Get help

Post on the GitHub Community Forum

Latest release

February 25, 2021

Learning Paths that include this course

Build end-to-end CI/CD capabilities directly in GitHub

byMSUSDEV With GitHub Actions, you can create and set up workflows in your repository to build, test, and...

DevOps with GitHub Actions

byThe GitHub Training Team Learn how to do DevOps on GitHub with the power of GitHub Actions! This path will guide you through...

What is GitHub Learning Lab?

Learn new skills by completing fun, realistic projects in your very own GitHub repository.