docker-image.yml

name: Docker Image CI

on:
  push:
    branches: [ master, main ]
  pull_request:
    branches: [ master, main ]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:

  build:

    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write

    steps:
      - uses: actions/checkout@v3

      - name: Install cosign
        if: github.event_name != 'pull_request'
        uses: sigstore/cosign-installer@main
        with:
          cosign-release: 'v1.7.2'

      - name: Set up JDK 11
        uses: actions/setup-java@v3
        with:
          java-version: '11'
          distribution: 'temurin'
          server-id: github
          settings-path: ${{ github.workspace }}

      - name: Build with Gradle
        uses: gradle/gradle-build-action@v2
        with:
          arguments: build

      - name: Log into registry ${{ env.REGISTRY }}
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v1.12.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v3.6.2
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Build and push Docker
        id: docker_build
        uses: docker/build-push-action@v2.7.0
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          secrets: |
            username: ${{ github.actor }}
            GIT_AUTH_TOKEN=${{ secrets.GITHUB_TOKEN }}