# GitHub Actions Yao-Yuan Mao (Rutgers, @yymao) Link to this slide deck: https://bit.ly/gha1201  --- ## Getting to know you!  if you have used GitHub Actions.  if you have ++not++ used GitHub Actions ++nor++ any other CI/CD tools.  if you have used other CI/CD tools, but ++not++ GitHub Actions. --- ## What is GitHub Actions? A set of ++predefined, customizable tasks++ that run on the GitHub cloud when specific ++triggering events++ take place, with results shown and integrated in GitHub. --- ## Billing (aka why we are moving to GitHub Actions)  [See details here.](https://docs.github.com/en/free-pro-team@latest/github/setting-up-and-managing-billing-and-payments-on-github/about-billing-for-github-actions) --- ## Actions in Action! Let's create a simple ++workflow++. --- ## Examples in DESC [Generate publication list on DESC website](https://github.com/LSSTDESC/lsstdesc.github.io/blob/master/.github/workflows/update-publication.yml) ([Example run](https://github.com/LSSTDESC/lsstdesc.github.io/runs/1468548531); [deployed product](https://lsstdesc.org/pages/publications.html)) [Build the desc-python-bleed kernel](https://github.com/LSSTDESC/desc-python/blob/master/.github/workflows/desc-python-bleed.yml) ([Example run](https://github.com/LSSTDESC/desc-python/runs/1470872428)) [Run linters and tests for GCRCatalogs](https://github.com/LSSTDESC/gcr-catalogs/blob/master/.github/workflows/pythonpackage.yml) ([Example run](https://github.com/LSSTDESC/gcr-catalogs/runs/1470275865)) --- ## Most useful links (IMHO) - [The basics](https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/introduction-to-github-actions) (useful for reviewing what we talked about today) - [Advanced techniques](https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows): [secrets](https://docs.github.com/en/free-pro-team@latest/actions/reference/encrypted-secrets), [cache](https://docs.github.com/en/free-pro-team@latest/actions/guides/caching-dependencies-to-speed-up-workflows) - Examples: [Testing Python packages](https://docs.github.com/en/free-pro-team@latest/actions/guides/building-and-testing-python), [migrate from travis CI](https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/migrating-from-travis-ci-to-github-actions) - Reference: [Syntax](https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions), [triggering events](https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows), [expression](https://docs.github.com/en/free-pro-team@latest/actions/reference/context-and-expression-syntax-for-github-actions) - [Action Marketplace](https://github.com/marketplace?type=actions) (Community actions usually host detailed documentation in their own GitHub repos)