.github/workflows/main.yml in tiny_hooks-0.1.0 vs .github/workflows/main.yml in tiny_hooks-0.2.0

@@ -2,17 +2,22 @@
 
 on: [push,pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        ruby: [2.5, 2.6, 2.7, 3.0, head]
+    runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.6.6
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
     - name: Run the default task
       run: |
-        gem install bundler -v 2.2.11
-        bundle install
         bundle exec rake
+