add github action for testing

Signed-off-by: Sebastian Gumprich <sebastian.gumprich@t-systems.com>

Author: Sebastian Gumprich

.github/workflows/test.yml

@@ -0,0 +1,25 @@
+name: Test
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby-version: ['2.6', '2.7', '3.0']
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+    - name: Run tests
+      run: bundle exec rake

Gemfile

@@ -2,13 +2,16 @@
 
 source 'https://rubygems.org'
 
-gem 'highline', '~> 2.0.2'
-gem 'inspec', '~> 3'
-gem 'rack', '~> 2.0.7'
-gem 'rake', '~> 12.3.2'
-gem 'rubocop', '~> 0.68.1'
+gem 'highline'
+gem 'rack'
+gem 'rake'
+gem 'rubocop'
 
 group :tools do
-  gem 'github_changelog_generator', '~> 1.14.3'
-  gem 'pry-coolline', '~> 0.2.5'
+  gem 'github_changelog_generator'
+  gem 'pry-coolline'
+end
+
+source 'https://packagecloud.io/cinc-project/stable' do
+  gem 'cinc-auditor-bin'
 end