Added option of running a release train for a single project #1

	name: Build & Deploy

	on:
	push:
	branches:
	- main
	tags:
	- "v*"

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up JDK 17
	uses: actions/setup-java@v4
	with:
	distribution: 'temurin'
	java-version: '17'

	- name: Cache Gradle packages
	uses: actions/cache@v3
	with:
	path: ~/.gradle/caches
	key: ${{ runner.os }}-gradle-${{ hashFiles('*/.gradle', '*/gradle-wrapper.properties') }}
	restore-keys: ${{ runner.os }}-gradle-

	- name: Grant execute permission for Gradle
	run: chmod +x gradlew

	- name: Build with Gradle without GH acceptance tests
	env:
	GH_TOKEN: ""
	run: ./gradlew build

	docker:
	needs: build
	runs-on: ubuntu-latest
	if: github.event_name == 'push' # Don't run for PRs

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up JDK 17
	uses: actions/setup-java@v4
	with:
	distribution: 'temurin'
	java-version: '17'

	- name: Login to Docker Hub
	run: echo "${{ secrets.DOCKER_HUB_TOKEN }}" \| docker login -u "${{ secrets.DOCKER_HUB_USERNAME }}" --password-stdin

	- name: Build with Gradle including acceptance tests
	env:
	GH_TOKEN: ${{ secrets.GH_TOKEN }}
	run: ./gradlew build

	- name: Build and push Docker image with Jib
	run: ./gradlew jib
	env:
	DOCKER_HUB_REPO: "mgrzejszczak/micrometer-release"
	DOCKER_HUB_USERNAME: ${{ secrets.DOCKER_HUB_USERNAME }}
	DOCKER_HUB_TOKEN: ${{ secrets.DOCKER_HUB_TOKEN }}

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