docker-image

name: Docker Image CI

on:
  push:
    tags:
      - 'v*.*.*'

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
      with:
        ref: ${GITHUB_REF:10}
    - name: Set output
      id: vars
      run: echo ::set-output name=tag::${GITHUB_REF:10}
    - name: Build the Docker image
      run: |
        echo "Building ${{ steps.vars.outputs.tag }}"
        docker build . --file docker/Dockerfile --tag heimdall:${{ steps.vars.outputs.tag }}