01-ci-docker-image.yml

name: 🐋 Docker image ci

on:
  push:
    paths: [docker/**]
    branches: [main]
  pull_request:
    paths: [docker/**]
    branches: [main]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build:
    name: 📦 Build docker image
    runs-on: ubuntu-20.04
    steps:
      - name: ⤵️ Check out code from GitHub
        uses: actions/checkout@v3

      - name: 🚀 Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: 📦 Build Docker image and export
        uses: docker/build-push-action@v3
        with:
          context: docker
          tags: ${{ secrets.DOCKERHUB_REPO }}:${{ github.run_number }}, ${{ secrets.DOCKERHUB_REPO }}:latest
          outputs: type=docker,dest=/tmp/docker-image-${{ github.run_number }}.tar.gz

      - if: github.event_name == 'push'
        name: ⬆ Upload artifact
        uses: actions/upload-artifact@v3
        with:
          name: docker-image-${{ github.run_number }}.tar.gz
          path: /tmp/docker-image-${{ github.run_number }}.tar.gz

  publish:
    if: github.event_name == 'push'
    name: 💭 Publish Docker image
    runs-on: ubuntu-20.04
    needs: [build]
    steps:
      - name: 🚀 Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: ⤵️ Download artifact
        uses: actions/download-artifact@v3
        with:
          name: docker-image-${{ github.run_number }}.tar.gz
          path: /tmp/

      - name: 🐋 Load image
        run: |
          docker load -i /tmp/docker-image-${{ github.run_number }}.tar.gz

      - name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN}}

      - name: 💭 Publish image
        run: |
          docker push ${{ secrets.DOCKERHUB_REPO }}:${{ github.run_number }}
          docker push ${{ secrets.DOCKERHUB_REPO }}:latest