build-docker-image.yml

name: build and push docker image, on new release

on:
  release:
    types: [published]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

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

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

      - name: Debug
        run: |
          echo "Value of GITHUB_REF: $GITHUB_REF"

      - name: Extract tag name
        id: extract_tag
        run: echo "TAG=${GITHUB_REF#refs/tags/v}" >> $GITHUB_ENV

      - name: Build and push
        uses: docker/build-push-action@v4
        with:
          context: .
          file: ./Dockerfile
          push: true
          platforms: linux/amd64,linux/arm64,linux/arm/v7
          tags: |
            ${{ secrets.DOCKERHUB_USERNAME }}/teampy:${{ env.TAG }}
            ${{ secrets.DOCKERHUB_USERNAME }}/teampy:latest