Adding Github Actions to a repo

Reference: Understanding GitHub Actions: Create an Example Workflow

In your repo, create a directory called .github/workflows/, and inside there, create an arbitrary named yml file for your workflow. For example, .github/workflows/example-workflow.yml, with code like:

name: this-is-the-workflow-name   # Pick a name you like.
on: [push]
jobs:
  this-is-the-job-name:           # Pick a name you like.
    runs-on: self-hosted
    steps:
      - uses: actions/checkout@v4
      - run: echo "hello world"

For details on formatting this file, see Understanding GitHub Actions: Understanding the workflow file. For your convenience, highlights are provided here:
Notice the jobs field contains a hash, or dictionary, of jobs. You may create more than one job, which will perform multiple actions on multiple runners.
runs-on specifies which runner you wish your job to run on.
- For a list of github cloud-hosted runners, see About GitHub-hosted runners
- For a Tufts on-prem runner, please see Making a private Github Runner
uses: actions/checkout@v4 This will checkout your repository in the working directory where the job runs. It is generally recommended to keep this line as-is, unless you have a reason to change it.
run: lines specify actual commands that will run on the runner. You may specify more than one.