Ruby on Rails + Github Actions

workflow.yml

name: "Ruby on Rails trigger Github Actions"
on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        ruby-version: ['3.2.2']
    services:
      postgres:
        image: postgres
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
        ports:
          - 5432:5432
    steps:
      - uses: actions/checkout@v4
      - name: Verifying Gemfile
        run: rm Gemfile && mv Gemfile_cp Gemfile
      - name: Verifying Ruby Version
        run: rm .ruby-version && touch .ruby-version && echo 3.2.2 >> .ruby-version
      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          bundler-cache: true
      - name: Install Bundler
        run: gem install bundler && bundle config set frozen false
      - name: Run Bundle Install
        run: bundle install
      - name: Run Database Create and Migrate
        run: bundle exec rails db:create db:migrate
        env:
          POSTGRES_HOST: localhost
          POSTGRES_PORT: 5432
  rubocop:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        ruby-version: ['3.2.2']
    steps:
      - uses: actions/checkout@v4
      - name: Verifying Gemfile
        run: rm Gemfile && mv Gemfile_cp Gemfile
      - name: Verifying Ruby Version
        run: rm .ruby-version && touch .ruby-version && echo 3.2.2 >> .ruby-version
      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          bundler-cache: false
      - name: Install Bundler
        run: gem install bundler
      - name: Run Bundle Install
        run: bundle install
      - name: prevent freeze
        run: bundle config unset deployment
      - name: Verifying Rubocop setup
        run: rm .rubocop.yml && mv .rubocop.yml_cp .rubocop.yml
      - name: Lint Ruby files
        env:
          PROJECT_NAME: ${{ secrets.PROJECT_NAME }}
        run: |
          echo $PROJECT_NAME
          bundle exec rubocop
  rspec:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        ruby-version: ['3.2.2']
    services:
      postgres:
        image: postgres
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
        ports:
          - 5432:5432
    steps:
      - uses: actions/checkout@v4
      - name: Verifying Gemfile
        run: rm Gemfile && mv Gemfile_cp Gemfile
      - name: Verifying Ruby Version
        run: rm .ruby-version && touch .ruby-version && echo 3.2.2 >> .ruby-version
      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          bundler-cache: false
      - name: Install Bundler
        run: gem install bundler
      - name: Run Bundle Install
        run: bundle install
      - name: Prevent freeze
        run: bundle config unset deployment
      - name: Setup test database
        run: bundle exec rails db:create db:migrate
        env:
          POSTGRES_HOST: localhost
          POSTGRES_PORT: 5432
      - name: Run Rspec
        run: bundle exec rspec

In my case, I'm using Ruby 3.3.1, so I need to change to 3.2.2, that's why my Gemfile and .ruby-version needs to be clean and replaced

Place it at: your_project_root/.github/workflows/some-supercool-name-workflow.yml