Add github workflow config for running specs

.github/workflows/ruby.yml

@@ -0,0 +1,37 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+# This workflow will download a prebuilt Ruby version, install dependencies and run tests with Rake
+# For more information see: https://github.com/marketplace/actions/setup-ruby-jruby-and-truffleruby
+
+name: Ruby
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: ['2.7', '3.0', '3.1', '3.2', '3.3']
+        rails-version: ['6.0', '6.1', '7.0', '7.1']
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true
+      env:
+        RAILS_VERSION: ${{ matrix.rails-version }}
+    - name: Run tests
+      run: bundle exec rspec

mcm.gemspec

@@ -22,10 +22,12 @@ Gem::Specification.new do |spec|
     Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
   end
 
-  spec.add_dependency "rails", ">= 6.0.0"
+  rails_version = ENV["RAILS_VERSION"] || "6.0.0"
+
+  spec.add_dependency "rails", ">= #{rails_version}"
+  spec.add_dependency "activestorage", ">= #{rails_version}"
   spec.add_dependency "haml-rails"
   spec.add_dependency "image_processing", "~> 1.2"
   spec.add_dependency "bootstrap_form", "~> 4.0"
-  spec.add_dependency "activestorage", ">= 6.0.0"
   spec.add_dependency "view_component", ">= 2.7.0"
 end