Create validate_urls.yml

.github/workflows/validate_urls.yml

@@ -0,0 +1,31 @@
+name: Validate links
+
+on: [push, pull_request]
+
+concurrency:
+  group: ${{github.workflow}}-${{github.ref}}
+  cancel-in-progress: true
+
+jobs:
+  unit:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v3
+
+      - name: set up ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.1
+          bundler-cache: true
+
+      - name: install awesome_bot
+        run: gem install awesome_bot
+
+      - name: validate URLs
+        run: awesome_bot README.md --allow-redirect --request-delay 0.4