docker.yml

name: Docker

on:
  push:
    branches:
      - main
    tags:
      - '*'
  pull_request:
    branches:
      - main
  workflow_dispatch:
    inputs:
      arm64:
        description: Build multi-platform image including arm64
        type: boolean
        required: false
        default: false

env:
  IMAGES: |
    ${{ vars.DOCKERHUB_REPOSITORY || github.repository }}

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: Set up QEMU
        if: inputs.arm64
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        if: inputs.arm64
        uses: docker/setup-buildx-action@v3
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.IMAGES }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.') }}
      - name: Login to DockerHub
        if: vars.DOCKERHUB_REPOSITORY
        continue-on-error: ${{ github.event_name == 'pull_request' }}
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          platforms: ${{ inputs.arm64 && 'linux/amd64,linux/arm64' || '' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: | # Julia's Pkg expects a Git repository
            BUILDKIT_CONTEXT_KEEP_GIT_DIR=true
          push: ${{ github.event_name == 'push' }}