name: build
on: [push]

jobs:
  build:
    runs-on: ubuntu-latest
    # Runner ke paas sirf do label hain (ubuntu-latest, node-22) — Java ka koi nahi.
    # Isliye job ko Maven ke apne image ke andar chalate hain. Build ka environment
    # pinned ho jaata hai: jo yahan chala, wahi laptop pe chalega.
    container:
      image: maven:3.9-eclipse-temurin-21
    steps:
      - uses: actions/checkout@v4
      - name: Build aur test
        run: mvn -B clean verify