docker-release.yml

# This is a basic workflow to help you get started with Actions

name: Publish Tagged Images to DockerHub

# Controls when the workflow will run
on:
  # Triggers the workflow on push or pull request events but only for the develop branch
  push:
    tags: 
      - '*'
#   pull_request:
#     branches: [ develop ]

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  build:
    # The type of runner that the job will run on
    runs-on: ubuntu-latest

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
      - name: Checkout Repo
        uses: actions/checkout@v2
      
      - name: Set tag
        id: vars
        run: echo ::set-output name=tag::${GITHUB_REF#refs/*/}
     
      - name: Login to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1

      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          context: ./
          file: ./Dockerfile
          push: true
          tags: ecmwf/skinnywms:${{ steps.vars.outputs.tag }}

      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}