docker.yml

name: Build docker images
on:
  push:
  workflow_dispatch:
    inputs:
      commit:
        description: 'Commit to extract from'
        type: string
      branch:
        description: 'Branch to extract from'
        type: string
      login:
        description: 'Log in to Docker Hub'
        type: boolean
        default: true
      push:
        description: 'Push the built images'
        type: boolean
        default: false

jobs:
  prepare:
    runs-on: ubuntu-latest
    outputs:
      TAG: ${{steps.get-parameters.outputs.TAG}}
    steps:
      - name: Download build parameters
        if: github.event_name == 'workflow_dispatch'
        uses: dawidd6/action-download-artifact@v2
        with:
          workflow: build.yml
          workflow_conclusion: success
          commit: ${{inputs.commit}}
          branch: ${{inputs.branch}}
          event: push
          name: parameters
      - name: Get build parameters
        id: get-parameters
        run: |
          if [ -f parameters.txt ]; then
              cat parameters.txt >> $GITHUB_OUTPUT
          else
              echo TAG=test >> $GITHUB_OUTPUT
          fi
          cat $GITHUB_OUTPUT

  docker-build:
    needs: [prepare]
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        include:
          - { file: Dockerfile,     maintag: latest,  prefix: }
          - { file: Dockerfile.dev, maintag: dev,     prefix: dev- }
    steps:
      - uses: actions/checkout@v3
        with:
          ref: ${{ (inputs.commit != '' && inputs.commit) || inputs.branch }}
      - name: Log in to Docker Hub
        if: ${{inputs.login}}
        uses: docker/login-action@v2
        with:
          username: ${{secrets.DOCKER_USERNAME}}
          password: ${{secrets.DOCKER_PASSWORD}}
      - name: Build Docker images
        uses: docker/build-push-action@v4
        with:
          context: .
          push: ${{ (github.event_name == 'workflow_dispatch' && inputs.push) || false }}
          file: ./${{matrix.file}}
          tags: |
            mstorsjo/llvm-mingw:${{matrix.maintag}}
            mstorsjo/llvm-mingw:${{matrix.prefix}}${{needs.prepare.outputs.TAG}}
      - name: Inspect Docker images
        run: |
          docker images