github(actions): add release asset steps

.github/workflows/gradle.yml

@@ -1,7 +1,4 @@
-# This workflow will build a Java project with Gradle
-# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
-
-name: Build
+name: Build and Release (Debian)
 
 on:
   push:
@@ -13,14 +10,36 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK
-      uses: actions/setup-java@v1
-      with:
-        java-version: 11
-    - name: Grant execute permission for gradlew
-      run: chmod +x gradlew
-    - name: Test
-      run: ./gradlew test --stacktrace
-    - name: Build with Gradle
-      run: ./gradlew build
+      - uses: actions/checkout@v2
+      - name: Set up JDK
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Test
+        run: ./gradlew test --stacktrace
+      - name: Build with Gradle
+        run: ./gradlew build
+      - name: Create Debian Distribution
+        run: ./gradlew packageDeb
+      - 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: true
+          prerelease: false
+      - name: Upload Release Asset
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps
+          asset_path: ./build/compose/binaries/main/deb/ck3-workbench_0.0.1-1_amd64.deb
+          asset_name: ck3-workbench_0.0.1-1_amd64.deb
+          asset_content_type: application/zip