Add build workflow

.github/workflows/build.yml

@@ -0,0 +1,20 @@
+name: Tests
+
+on:
+  push:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    if: github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.pull_request.user.login == 'dependabot[bot]')
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.0.0'
+      - name: Gem build
+        run: gem build easycache.gemspec

.github/workflows/tests.yml

@@ -12,10 +12,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Ruby 2.1.9
+      - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '2.1.9'
+          ruby-version: '3.0.0'
       - name: Bundle Install
         run: bundle install