deploy.yml

# yamllint --format github .github/workflows/deploy.yml
---
name: deploy

# We deploy on a release versions, regardless of if the commit is documentation-only or not.
#
# See https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions#filter-pattern-cheat-sheet
on:
  push:
    tags: '[0-9]+.[0-9]+.[0-9]+**'  # Ex. 1.2.3

jobs:
  deploy:
    runs-on: ubuntu-20.04  # newest available distribution, aka focal
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v2
        with:
          fetch-depth: 1  # full history is not needed
      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: 2.7
          bundler-cache: true
      - name: Deploy
        env:
          # RUBYGEMS_API_KEY=<hex token value>
          #   - needs to own the gem
          #   - generated at https://rubygems.org/settings/edit
          RUBYGEMS_API_KEY: ${{ secrets.RUBYGEMS_API_KEY }}
          BUNDLE_GEMFILE: gemfiles/faraday_1.x.gemfile
        run: |  # GITHUB_REF will be refs/tags/MAJOR.MINOR.PATCH
          build-bin/configure_deploy &&
          build-bin/deploy $(echo ${GITHUB_REF} | cut -d/ -f 3)