deploy-snapshot.yml

name: Deploy SNAPSHOT

on: 
  push:
    branches: [ dev ]
    paths:
      - src/**
      - pom.xml
  pull_request:
    branches: [ dev ]
    paths:
      - src/**
      - pom.xml

jobs:
  get-latest-tag:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2.2.0
      - name: Set up Java and Maven
        uses: actions/setup-java@v2
        with:
          java-version: '8'
          distribution: 'adopt'
          server-id: ossrh
          server-username: MAVEN_USERNAME
          server-password: MAVEN_PASSWORD
      - name: Cache m2 package
        uses: actions/cache@v2
        with:
          path: ~/.m2/repository
          key: ${{ runner.os }}-maven-${{ hashFiles('pom.xml') }}
          restore-keys: |
            ${{ runner.os }}-maven-
      - name: get current project version to set env.VERSION
        run: echo "VERSION=`mvn help:evaluate -Dexpression=project.version -q -DforceStdout`" >> $GITHUB_ENV
      - name: set snapshot version
        if: ${{ !endsWith( env.VERSION , '-SNAPSHOT') }} 
        run: mvn versions:set -DnewVersion=${{ env.VERSION }}-SNAPSHOT
      - name: deploy snapshot to ossrh repository
        run: mvn -B deploy -P snapshot
        env:
          MAVEN_USERNAME: ${{ secrets.OSSRH_USERNAME }}
          MAVEN_PASSWORD: ${{ secrets.OSSRH_TOKEN }}