docker-image.yml

name: Build Images

on:
  # Build and publish when pushed to master
  push:
    branches:
      - master
  # Build, but don't push on pull requests
  pull_request:

env:
  IMAGE_NAME: openjournals/paperdraft

jobs:
  # Build images and store them as tar archive
  build:
    name: Build
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Build image
        run: |
            docker build \
              --tag $IMAGE_NAME \
              -f paperdraft.Dockerfile \
              .

      - name: Save images to archive
        run: docker save $IMAGE_NAME > image.tar

      - name: Upload archive
        uses: actions/upload-artifact@v1
        with:
          name: paperdraft
          path: image.tar

  # Push image to GitHub Packages.
  push:
    name: Push
    runs-on: ubuntu-latest
    if: github.event_name == 'push'
    needs:
      - build

    steps:
      - name: Download stored images
        uses: actions/download-artifact@v1
        with:
          name: paperdraft

      - name: Load images
        run: |
          docker load --input paperdraft/image.tar

      - name: Log into registry
        run: >-
          echo "${{ secrets.DOCKER_HUB_TOKEN }}" |
            docker login -u ${{ secrets.DOCKER_HUB_USERNAME }} --password-stdin

      - name: Push core image
        run: docker push $IMAGE_NAME