Kuma/.github/workflows/dockerpush.yml

name: Container build & push
on:
  push:
    tags:
      - v*
jobs:
  docker_build:
    runs-on: ubuntu-latest
    steps:
      - name: Get the tag
        run: |
          echo "TAG=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
      - name: Check out code
        uses: actions/checkout@v2
      - name: Login to DockerHub
        uses: docker/login-action@v1 
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_TOKEN }}
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v1 
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Build and push
        uses: docker/build-push-action@v2
        with:
          context: .
          platforms: linux/amd64
          push: true
          tags: |
            ${{ github.repository }}:latest
            ${{ github.repository }}:${{ env.TAG }}
            ghcr.io/${{ github.repository }}:latest
            ghcr.io/${{ github.repository }}:${{ env.TAG }}