Improve/fix GitHub Actions pipleline

.github/workflows/check.yml

@@ -0,0 +1,36 @@
+name: Check
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+    types:
+      - opened
+      - synchronize
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v4
+        with:
+          java-version: 8
+          distribution: "zulu"
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+      - name: Lint
+        run: ./gradlew spotlessCheck
+      - name: Test
+        run: ./gradlew test

.github/workflows/gem-push.yml

@@ -0,0 +1,63 @@
+name: Ruby Gem
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v4
+        with:
+          java-version: 8
+          distribution: "zulu"
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+      - name: Lint
+        run: ./gradlew spotlessCheck
+      - name: Test
+        run: ./gradlew test
+  build:
+    name: Build + Publish
+    runs-on: ubuntu-latest
+    needs:
+      - test
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Ruby 2.7
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 2.7
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v4
+        with:
+          java-version: 8
+          distribution: "zulu"
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: Push gem
+        uses: trocco-io/push-gem-to-gpr-action@v2
+        with:
+          language: java
+          gem-path: "./build/gems/*.gem"
+          github-token: "${{ secrets.GITHUB_TOKEN }}"