Add actions workflow

.github/workflows/release.yml

@@ -0,0 +1,66 @@
+name: release
+on:
+  push:
+    tags:
+      - "*"
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v1
+
+    - name: Get deps cache
+      uses: actions/cache@v1
+      with:
+        path: vendor/bundle
+        key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
+        restore-keys: ${{ runner.os }}-gems-
+
+    - uses: actions/setup-ruby@v1
+      with:
+        ruby-version: "2.6"
+
+    - name: Bundle install
+      run: |
+        gem install bundler:2.1.4
+        bundle config path vendor/bundle
+        bundle install --jobs 4 --retry 3
+
+    - name: Build docset
+      run: |
+        bundle exec cheatset generate terraform.rb
+        zip terraform-docset.zip Terraform.docset
+
+    - uses: actions/upload-artifact@v2
+      with:
+        name: terraform-docset
+        path: terraform-docset.zip
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+    - name: Download artifact
+      uses: actions/download-artifact@v2
+      with:
+        name: terraform-docset
+    - name: Create release
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ github.ref }}
+        release_name: Release ${{ github.ref }}
+        draft: false
+        prerelease: false
+    - name: Upload Release Asset
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: ./terraform-docset.zip
+        asset_name: terraform-docset.zip
+        asset_content_type: application/zip