Add ruby version matrix to the CI

.github/workflows/rspec.yml

@@ -6,6 +6,11 @@ jobs:
   test:
     runs-on: ubuntu-latest
 
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby-version: ['3.2', '3.1', '3.0']
+
     services:
       redis:
         image: redis:alpine
@@ -18,10 +23,12 @@ jobs:
           - 6379:6379
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: ruby/setup-ruby@v1
+      - uses: actions/checkout@v4
+
+      - name: Set up Ruby ${{ matrix.ruby-version }}
+        uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true
 
       - name: Run tests

Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:2.7-buster
+FROM ruby:3.2
 
 ARG BUNDLE_SAGEONEGEMS__JFROG__IO
 

cache_store_redis.gemspec

@@ -13,6 +13,8 @@ Gem::Specification.new do |spec|
   spec.homepage      = 'https://github.com/sage/cache_store'
   spec.license       = 'MIT'
 
+  spec.required_ruby_version = '>= 3.0'
+
   spec.files         = Dir.glob("{bin,lib}/**/**/**")
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }