name: Docker Image CI

on:
  push:
    branches:
    - master
    - edge
  pull_request:
    branches:
    - master
    - edge

jobs:

  build:
 
    runs-on: ubuntu-18.04
 
    steps:
    - uses: actions/checkout@v1
    - name: Build the Docker image
      run: docker build . --file Dockerfile --tag b4tman/armhf-alpine-qemu:$(date +%s)