build-docker-image.yml

# build docker image and push to docker hub

# note: this won't work because the cross-platform build takes around 10h,
# but github limits us to 6h.
# so need to build it locally and push to docker hub.
# see Dockerfile for instructions.

# needs github secrets set for -
#   DOCKERHUB_USERNAME - ie mtconnect
#   DOCKERHUB_TOKEN - token for that account

# Set VERSION below before building.
# See CMakeLists.txt for the current version.
# Note: this will tag the image with that version, as well as 'latest'.

name: Build Docker image

env:
  PLATFORMS: linux/amd64,linux/arm64

# when to run workflow
on:
  # # run on push or pull request events for the master branch
  # push:
  #   branches: [ main ]
  # pull_request:
  #   branches: [ main ]

  # allows you to run this workflow manually from the actions tab
  workflow_dispatch:

# a workflow run has 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
      # see https://github.com/actions/checkout
      - name: Checkout Agent
        uses: actions/checkout@v3

      # the QEMU emulator lets us build for arm processors also
      # see https://github.com/docker/setup-qemu-action
      - name: Set up QEMU emulator
        uses: docker/setup-qemu-action@v1

      # see https://github.com/docker/setup-buildx-action
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      # see https://github.com/docker/build-push-action
      - name: Build image and push to DockerHub
        uses: docker/build-push-action@v2
        with:
          context: .
          file: Dockerfile
          platforms: ${{ env.PLATFORMS }}

          # docker hub user/repo:tag
          tags: |
            ${{ secrets.DOCKERHUB_USERNAME }}/agent:latest
            ${{ secrets.DOCKERHUB_USERNAME }}/agent:${{ github.ref_name }}

          # push to docker hub
          push: true