build-dockerhub.yml

name: Build Oral History Web for Docker Hub
on:
  push:
    branches:
      - main
    paths-ignore:
      - 'charts/**'
  pull_request:
    branches:
      - main
    paths-ignore:
      - 'charts/**'

jobs:
  build-for-docker-hub:
    runs-on: ubuntu-latest
    steps:
      - name: Set env
        run: >-
          echo "TAG=${HEAD_TAG::8}" >> ${GITHUB_ENV};
          echo ${HEAD_TAG::8}
        env:
          HEAD_TAG: ${{ github.event.pull_request.head.sha || github.sha }}
        shell: bash

      - name: Check out code
        uses: actions/checkout@v3

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

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

      - name: Retag latest if merge to main action
        id: meta-web
        uses: docker/metadata-action@v4.1.1
        with:
          images: |
            name=uclalibrary/oral-history
          tags: |
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push
        uses: docker/build-push-action@v3
        with:
          context: .
          push: true
          tags: |
            ${{ steps.meta-web.outputs.tags }}
            uclalibrary/oral-history:${{ env.TAG }}