main.yml

name: "Build Docker Image on Base Image Update"

on:
  push:
    branches:
      - master
  schedule:
    - cron: "0 9 * * *"

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v2

      - name: Check if Base Image Updated
        id: image_update_check
        uses: lucacome/docker-image-update-checker@v1
        with:
          base-image: "ubuntu:latest"
          image: "realies/soulseek:latest"

      - name: Set up Docker Buildx
        if: steps.image_update_check.outputs.needs-updating == 'true'
        uses: docker/setup-buildx-action@v1

      - name: Login to Docker Hub
        if: steps.image_update_check.outputs.needs-updating == 'true'
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build and Push Docker Image
        if: steps.image_update_check.outputs.needs-updating == 'true'
        uses: docker/build-push-action@v2
        with:
          context: .
          file: Dockerfile
          push: true
          tags: realies/soulseek:latest
          builder: ${{ steps.buildx.outputs.name }}
          platforms: linux/amd64

      - name: Docker Image Digest
        if: steps.image_update_check.outputs.needs-updating == 'true'
        run: echo ${{ steps.docker_build.outputs.digest }}