build.yml

name: Docker image build
on:
  push:
    tags:
      - '*'
jobs:
  build:
    name: Build image for dockerhub
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1
      - name: Get the version
        id: vars
        run: echo ::set-output name=tag::$(echo ${GITHUB_REF:10})
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1
      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Build and push
        uses: docker/build-push-action@v2
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          tags: techniktueftler/speedtest:${{steps.vars.outputs.tag}}, techniktueftler/speedtest:latest