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GitHub Actions ConFoo Montreal 2025-02-26
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sullis
February 26, 2025
Programming
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GitHub Actions ConFoo Montreal 2025-02-26
GitHub Actions
Confoo Montreal
February 2025
sullis
February 26, 2025
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Transcript
GitHub Actions 2025-02-26 Sean Sullivan
GITHUB ACTIONS
Agenda Core concepts Security
“GitHub Actions help you automate your software development work fl
ows” source: GitHub.com
“You can write individual tasks, called actions, and combine them
to create a custom work fl ow” source: GitHub.com
Getting started
Actions tab
Actions tab Starter Work fl ows
Work fl ow editor
Work fl ow editor
Work fl ow editor
Work fl ow editor checkout
Work fl ow editor setup-java
Work fl ow editor run
Work fl ow editor
.github/work fl ows
Actions tab
Actions tab
Actions tab
Valkey Iceberg Log4j Open source projects using GitHub Actions Spring
Boot Netty Net fl ix Zuul
Core concepts
Events Actions Work fl ows
create deployment deployment_status issue created pull_request push schedule label created
(and many more) Events trigger work fl ows
Work fl ows are custom automated processes that you can
set up in your repository to build, test, package, release, or deploy source: GitHub.com
GitHub webhooks GitHub Actions work fl ows
Actions are individual tasks that you can combine to create
jobs source: GitHub.com
You can create custom Actions or use Actions provided by
the GitHub community source: GitHub.com
action.yml declares the inputs and outputs for an action source:
GitHub.com
Types of Actions: JavaScript Docker source: GitHub.com
“GitHub Actions is available with GitHub Free, GitHub Pro, GitHub
Team, and GitHub Enterprise” source: GitHub.com
What if I already have an existing CI tool enabled?
Keep your existing CI tool and enable GitHub Actions
Evaluate both CI tools running side-by-side
Actions runtime Runners Virtual Environments
Runners GitHub-hosted Self-hosted
Hosted Runners “GitHub hosts Linux and Windows runners on Standard_DS2_v2
virtual machines in Microsoft Azure with the GitHub Actions runner application installed” source: GitHub.com
Self-Hosted Runners “Self-hosted runners can be physical, virtual, container, on-premises,
or in a cloud” source: GitHub.com
Self-Hosted Runners
Self-Hosted Runners C Sharp
Virtual Environments
Ubuntu 24.04 Ubuntu 22.04 Linux support
ARM support
ARM support
ARM support
Work fl ow matrix
Third party actions
AWS Actions Azure Actions Google Cloud Actions
Pulumi Actions Terraform Actions Docker Actions
https://github.com/aws-actions
None
AWS: action.yml
Security
Secrets access protected keys using the secrets context object source:
GitHub.com
Secrets
Secrets source: GitHub.com
Secrets source: GitHub.com
Secrets source: GitHub.com
Self-Hosted Runners “do not use self- hosted runners with public
repositories” source: GitHub.com
Self-Hosted Runners “Forks of your public repository can potentially run
dangerous code on your self-hosted runner machine” source: GitHub.com
GitHub Actions YAML Automation Conclusion
Thank you tinyrobots.bsky.social github.com/sullis
THE END
Bonus slides
“CI ensures that the code that we create, as a
team, works by providing us with rapid feedback on any problems”
None