add ci

.github/workflows/ci.yml

@@ -0,0 +1,43 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Ruby ${{ matrix.ruby }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Ruby 3.2
+          - ruby_version: "3.2"
+            rails_version: "7.0"
+          - ruby_version: "3.2"
+            rails_version: "7.1"
+          - ruby_version: "3.2"
+            rails_version: "7.2"
+
+          # Ruby 3.3
+          - ruby_version: "3.3"
+            rails_version: "7.0"
+          - ruby_version: "3.3"
+            rails_version: "7.1"
+          - ruby_version: "3.3"
+            rails_version: "7.2"
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby_version }}
+          bundler-cache: true
+      - name: Build and test
+        run: |
+          bundle exec appraisal rails-${{ matrix.rails_version }} bundle