ZTD — GitHub Actions Demo

Teaching repository for GitHub Actions.

A tiny Python calculator wired up with the full set of workflow constructs,

What's here

File	Demonstrates
app/calculator.py, tests/	the app under test (pytest)
.github/workflows/ci.yml	events (push/pull_request/workflow_dispatch), needs: ordering, matrix across Python versions, pip caching, artifacts
.github/workflows/reusable-build.yml	a reusable workflow (workflow_call) with an input
.github/workflows/caller.yml	calling the reusable workflow at the job level

Run locally

pip install -r requirements.txt
flake8 app tests --max-line-length=100
pytest -v

Jenkins → GitHub Actions

This repo is the GitHub Actions counterpart to the Week-5 Jenkins labs. Mental map:

Jenkins	GitHub Actions
Jenkinsfile	.github/workflows/*.yml
Pipeline	Workflow
stage	job (parallel by default)
step	step
Agent / node	Runner
triggers { }	on:
agent { label }	runs-on:
Plugin	Action (Marketplace)
Shared library	Reusable workflow
Credentials store	Secrets
environment { }	env: