Add ruby release action (#1051)

.github/workflows/ci.yml

@@ -1,11 +1,16 @@
+name: CI
+
 on:
+  workflow_dispatch: {}
   push:
     branches: [ master ]
+    tags:
+      - v[0-9]+.[0-9]+.[0-9]+*
   pull_request:
     branches: [ master ]
 
 jobs:
-  lint:
+  build:
     runs-on: ubuntu-latest
 
     steps:
@@ -13,9 +18,16 @@ jobs:
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.7
-    - name: rubocop
+        ruby-version:  3.1
+    - name: Lint
       run: bundle install && bundle exec rake rubocop
+    - name: Build
+      run: gem build stripe.gemspec
+    - name: 'Upload Artifact'
+      uses: actions/upload-artifact@v2
+      with:
+        name: gems
+        path: '*.gem'
 
   test:
     runs-on: ubuntu-latest
@@ -32,3 +44,23 @@ jobs:
       run: docker run -d -p 12111-12112:12111-12112 stripe/stripe-mock && sleep 5
     - name: test
       run: bundle install && bundle exec rake test
+
+  publish:
+    name: Publish
+    if: (((github.event_name == 'workflow_dispatch')) && (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/v')) && endsWith(github.actor, '-stripe'))
+    needs: [build, test]
+    runs-on: ubuntu-latest
+    steps:
+    - name: Download all workflow run artifacts
+      uses: actions/download-artifact@v2
+      with:
+        name: gems
+        path: gems
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version:  3.1
+    - name: Publish gems to Rubygems
+      run: gem push gems/*.gem
+      env:
+        GEM_HOST_API_KEY: ${{secrets.GEM_HOST_API_KEY}}