name: Docker Image CI

on:
  push:
    branches: [ "master", "dev" ]
  pull_request:
    # The branches below must be a subset of the branches above
    branches: [ "master", "dev" ]
  schedule:
    - cron: '39 0 * * 3'

jobs:

  build:

    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - name: Build the Docker image
        run: docker build . --file Dockerfile --tag my-image-name:$(date +%s)