run on tag

Author: motdotla

.github/workflows/ci.yml

@@ -22,3 +22,25 @@ jobs:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
       - run: bundle exec rake
+
+  # run only on semantic version tag
+  release:
+    needs:
+      - test
+    if: startsWith(github.ref, 'refs/tags/v') && contains(github.ref, '.')
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+
+      # GITHUB_ENV operates like a .env file
+      - name: extract version
+        run: |
+          VERSION=${GITHUB_REF#refs/tags/}
+          CLEAN_VERSION=${VERSION#v}
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+          echo "CLEAN_VERSION=$CLEAN_VERSION" >> $GITHUB_ENV
+
+