name: Manually Release Previous Tag

on: 
  workflow_dispatch:
    inputs:
      tag:
        description: 'Repo Branch/Tag'
        default: 'main'
        type: 'string'
        required: true

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: 'Checkout'
        uses: actions/checkout@v3
        with: 
          ref: ${{ inputs.tag }}
      - name: Prepare
        id: prep
        run: |
          DOCKER_IMAGE=${{ secrets.DOCKER_USERNAME }}/${GITHUB_REPOSITORY#*/}

          VERSION=${{ inputs.tag }}
          VERSION="${VERSION//v}"
          TAGS="${DOCKER_IMAGE}:${VERSION},${DOCKER_IMAGE}"

          # If the VERSION looks like a version number, assume that
          # this is the most recent version of the image and also
          # tag it 'latest'.
          if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
            TAGS="$TAGS,${DOCKER_IMAGE}"
          fi


          # Set output parameters.
          echo ::set-output name=tags::${TAGS}
          echo ::set-output name=docker_image::${DOCKER_IMAGE}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@master
        with:
          platforms: all

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

      - name: Login to DockerHub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build
        uses: docker/build-push-action@v2
        with:
          builder: ${{ steps.buildx.outputs.name }}
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64,linux/ppc64le
          push: true
          tags: ${{ steps.prep.outputs.tags }}