push.yml in inertia_rails-1.5.0

- old
+ new

@@ -6,13 +6,14 @@
   test:
     strategy:
       fail-fast: false
       matrix:
         ruby: [2.6, 2.7]
+        rails: ['5.0', '5.1', '5.2', '6.0']
 
     runs-on: ubuntu-latest
-    name: Test against Ruby ${{ matrix.ruby }}
+    name: Test against Ruby ${{ matrix.ruby }} / Rails ${{ matrix.rails }}
 
     steps:
       - uses: actions/checkout@v2
 
       - name: Setup System
@@ -22,10 +23,13 @@
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
 
       - name: Install gems
+        env:
+          MATRIX_RAILS_VERSION: ${{ matrix.rails }}
         run: |
+          export BUNDLE_GEMFILE="${GITHUB_WORKSPACE}/gemfiles/rails_${MATRIX_RAILS_VERSION}.gemfile"
           gem install bundler
           bundle install --jobs 4 --retry 3
 
       - name: Run tests
         run: bundle exec rake