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First Steps in Github Actions
Learning Basic Concepts
Today I started my first steps into Github Actions. Similarly to when looking into Docker, I started learning the basic concepts from a tutorial by Nana.
I just created a new repository. I will test my first Github Action here.
The Hello World Action
Github has a “Simple Workflow” template (go to your repository > Actions > Simple Workflow). I am creating a simple hello world example with the template as provided in a file named blank.yaml
(only changed workflow name).
# This is a basic workflow to help you get started with Actions
name: Hello World Workflow Example
# Controls when the workflow will run
on:
# Triggers the workflow on push or pull request events but only for the "main" branch
push:
branches: [ "main" ]
pull_request:
branches: [ "main" ]
# Allows you to run this workflow manually from the Actions tab
workflow_dispatch:
# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
# This workflow contains a single job called "build"
build:
# The type of runner that the job will run on
runs-on: ubuntu-latest
# Steps represent a sequence of tasks that will be executed as part of the job
steps:
# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
- uses: actions/checkout@v3
# Runs a single command using the runners shell
- name: Run a one-line script
run: echo Hello, world!
# Runs a set of commands using the runners shell
- name: Run a multi-line script
run: |
echo Add other actions to build,
echo test, and deploy your project.
Excecution of The Action
Since the action is configured to be triggered on push
, the push of the file containing the action itself triggers the first execution. After that, I was able to trigger it again manually using GitHub web app UI thanks to the workflow_dispatch:
which allows that possibility.
Checking The Outputs
By clicking on the three dots in a workflow run, and then in “View workflow file”, I can see the expected outputs.