Add workflow for release build. (#221)

Co-authored-by: srprash <[email protected]>

.github/workflows/release-build.yml

@@ -0,0 +1,50 @@
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: The version to tag the release with, e.g., 1.2.0, 1.2.1-alpha.1
+        required: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: 11
+      - name: Cache Gradle Modules
+        uses: actions/cache@v1
+        with:
+          path: ~/.gradle/caches
+          key: gradle-caches-${{ hashFiles('**/*.gradle.kts') }}
+      - name: Cache Gradle Wrapper
+        uses: actions/cache@v1
+        with:
+          path: ~/.gradle/wrapper
+          key: gradle-wrapper-${{ hashFiles('gradle/wrapper/gradle-wrapper.properties') }}
+      - name: Build and test
+        run: ./gradlew build -Prelease.version=${{ github.event.inputs.version }} --stacktrace
+        env:
+          CI: true
+      - name: Publish to staging repo
+        run: ./gradlew final -Prelease.version=${{ github.event.inputs.version }} --stacktrace
+        env:
+          CI: true
+          SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
+          SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
+          GPG_KEY_ID: ${{ secrets.GPG_KEY_ID }}
+          GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
+          GPG_PASSWORD: ${{ secrets.GPG_PASSWORD }}
+          GRGIT_USER: ${{ github.actor }}
+          GRGIT_PASS: ${{ secrets.GITHUB_TOKEN }}
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: v${{ github.event.inputs.version }}
+          release_name: Release v${{ github.event.inputs.version }}
+          draft: true
+          prerelease: false