Add basic CI

Author: cowtowncoder

.github/workflows/main.yml

@@ -0,0 +1,33 @@
+name: Build
+on:
+  push:
+    branches:
+    - master
+    paths-ignore:
+    - "README.md"
+    - "release-notes/*"
+  pull_request:
+    branches:
+    - master
+permissions:
+  contents: read
+jobs:
+  build:
+    runs-on: 'ubuntu-latest'
+    strategy:
+      fail-fast: false
+      matrix:
+        java_version: ['8', '17', '25']
+    steps:
+    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+    - name: Set up JDK
+      uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # v5.0.0
+      with:
+        distribution: "temurin"
+        java-version: ${{ matrix.java_version }}
+        cache: 'maven'
+        server-id: central-snapshots
+        server-username: CI_DEPLOY_USERNAME
+        server-password: CI_DEPLOY_PASSWORD
+    - name: Build
+      run: ./mvnw -B -q -ff -ntp verify