Security: PRs should not run `SonarCloud` (#1469)

.github/workflows/gradle-pr.yml

@@ -0,0 +1,44 @@
+
+name: Java PR CI
+
+on: [pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    services:
+      mariadb:
+        image: mariadb:latest
+        ports:
+          - 3306
+        env:
+          MYSQL_USER: user
+          MYSQL_PASSWORD: password
+          MYSQL_DATABASE: test
+          MYSQL_ROOT_PASSWORD: password
+        options: --health-cmd="mysqladmin ping" --health-interval=5s --health-timeout=2s --health-retries=3
+
+    steps:
+      - uses: actions/checkout@v1
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Verify MariaDB connection
+        env:
+          PORT: ${{ job.services.mariadb.ports[3306] }}
+        run: |
+          while ! mysqladmin ping -h"127.0.0.1" -P"$PORT" --silent; do
+            sleep 1
+          done
+      - name: Build with Gradle
+        env:
+          MYSQL_DB: test
+          MYSQL_USER: user
+          MYSQL_PASS: password
+          MYSQL_PORT: ${{ job.services.mariadb.ports[3306] }}
+        run: |
+          cd Plan
+          ./gradlew build

.github/workflows/gradle.yml

@@ -1,7 +1,7 @@
 
 name: Java CI
 
-on: [push, pull_request]
+on: [push]
 
 jobs:
   build: