name: CI

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  test:

    runs-on: ubuntu-latest

    strategy:
      matrix:
        ruby-version: ["3.0", "2.7", "2.6", "2.5", "ruby-head"]

    steps:
      - uses: actions/checkout@v2
      - name: Set up Ruby ${{ matrix.ruby-version }}
        uses: ruby/setup-ruby@ae9cb3b565e36682a2c6045e4f664388da4c73aa
        with:
          ruby-version: ${{ matrix.ruby-version }}
          bundler-cache: true # runs 'bundle install' and caches installed gems automatically
      - name: Run tests
        run: bundle exec rake ci

name: CI

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  test:

    runs-on: ubuntu-latest

    strategy:
      matrix:
        ruby-version: ["3.0", "2.7", "2.6", "2.5", "ruby-head"]

    steps:
      - uses: actions/checkout@v2
      - name: Set up Ruby ${{ matrix.ruby-version }}
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: ${{ matrix.ruby-version }}
          bundler-cache: true # runs 'bundle install' and caches installed gems automatically
      - name: Run tests
        run: bundle exec rake ci

Use a known tag for the setup-ruby GH Action
CI: Use a known tag for the setup-ruby GH Action

Let's see if this allows us to use the bundler-cache option, still.