Github actions for GraalVM native image build on Windows, Mac and Linux. Please adjust 'demo-cli' to final name.

graalvm.yml

# This workflow will build a Java project with Maven
# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven

name: GraalVM Native Image build

on:
  push:
    branches: [ master ]
    tags: [ '*' ]

jobs:
  buildOnWindows:
    runs-on: windows-latest

    steps:
      - uses: actions/checkout@v2
      - uses: ilammy/msvc-dev-cmd@v1.5.0
      - uses: microsoft/setup-msbuild@v1
      - uses: ayltai/setup-graalvm@v1
        with:
          java-version: 11
          graalvm-version: 20.3.0
          native-image: true
      - name: Build with Maven
        run: mvn -DskipTests -B clean package native-image:native-image --file pom.xml
        shell: powershell
      - name: Run UPX
        uses: crazy-max/ghaction-upx@v1.3.3
        with:
          version: latest
          file: target/demo-cli.exe
          args: '-7'
      - uses: actions/upload-artifact@v2
        with:
          if-no-files-found: warn
          name: package
          path: target/*.exe

  buildOnMac:
    runs-on: macos-latest

    steps:
      - uses: actions/checkout@v2
      - uses: ayltai/setup-graalvm@v1
        with:
          java-version: 11
          graalvm-version: 20.3.0
          native-image: true
      - name: Build with Maven
        run: mvn -DskipTests -B clean package native-image:native-image --file pom.xml
      - name: Run UPX
        uses: svenstaro/upx-action@v2
        with:
          file: target/demo-cli
          args: '-7'
      - name: Upload artifacts
        run: mkdir staging && cp target/demo-cli staging/demo-cli-mac-amd64
      - uses: actions/upload-artifact@v2
        with:
          name: package
          path: staging

  buildOnLinux:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: ayltai/setup-graalvm@v1
        with:
          java-version: 11
          graalvm-version: 20.3.0
          native-image: true
      - name: Build with Maven
        run: mvn -DskipTests -B clean package native-image:native-image --file pom.xml
      - name: Run UPX
        uses: crazy-max/ghaction-upx@v1.3.3
        with:
          version: latest
          file: target/demo-cli
          args: '-7'
      - name: Upload artifacts
        run: mkdir staging && cp target/demo-cli staging/demo-cli-linux-amd64
      - uses: actions/upload-artifact@v2
        with:
          name: package
          path: staging