Add ci workflow

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+name: Tests
+
+on:
+  pull_request:
+    branches:
+      - '*'
+  push:
+    branches:
+      - main
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby: ['3.1', '3.2', '3.3']
+    env:
+      BUNDLE_PATH_RELATIVE_TO_CWD: true
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+
+      - name: StandardRb check
+        run: bundle exec standardrb
+
+      - name: Run tests
+        run: bundle exec rake test

README.md

@@ -1,3 +1,4 @@
+[![Tests](https://github.com/eclectic-coding/rails_app/actions/workflows/ci.yml/badge.svg)](https://github.com/eclectic-coding/rails_app/actions/workflows/ci.yml)
 # RailsApp
 
 RailsApp is a gem that provides a simple way to create a new Rails application with a pre-configured set of gems and settings, utilizing the Rails application templates feature.