build_production_image.yml

name: Build Production Image

on:
  workflow_dispatch:
    inputs:
      branch:
        description: 'Git Reference to Build Into an Image'
        required: true
        default: trunk
      repo:
        description: 'Docker Repo to Push Image To'
        required: true
      tag:
        description: 'Name for Image'
        required: false
        default: edge
  push:
    branches: 'trunk'
    tags: 'v*.*.*' #all version tags

jobs:
  generate-image:
    runs-on: ubuntu-latest
    steps:
    -
      name: Setup QEMU
      uses: docker/setup-qemu-action@v2
    -
      name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v2
    -
      name: Login to DockerHub
      uses: docker/login-action@v2
      with:
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}
    -
      name: Git Build Context
      uses: actions/checkout@v3
      with:
        submodules: recursive
        ref: ${{ github.event.inputs.branch }}
    -
      name: Determine Image Tags
      id: generate_tag
      run: |
        source ${GITHUB_WORKSPACE}/.github/actions/common.sh
        _tags=""
        if [[ $GITHUB_EVENT_NAME == "workflow_dispatch" ]]; then
          _repo=${{ github.event.inputs.repo }}
          _input_tag=${{ github.event.inputs.tag }}
          if [[ ${_repo} == "ldmx/pro" ]]; then
            error "Provided 'ldmx/pro' repo on non-trunk branch."
            exit 1
          fi
          _tags="${_repo}:${_input_tag},${_repo}:sha-${GITHUB_SHA::8}"
        elif [[ $GITHUB_REF == refs/tags/* ]]; then
          # if pushing a git tag ==> get the git tag for the docker tag
          _git_tag=${GITHUB_REF#refs/tags/}
          _tags="ldmx/pro:$_git_tag"
          if [[ $_git_tag =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
            # there was a version released on github
            #   v<1-3 digits>.<1-3 digits>.<1-3 digits>
            _tags="$_tags,ldmx/pro:latest"
          fi
        elif [[ $GITHUB_REF == refs/heads/* ]]; then
          #pushing to trunk
          _tags="ldmx/pro:edge,ldmx/pro:sha-${GITHUB_SHA::8}"
        else
          error "Running Determine Image Tags on a commit that isn't a tag or a branch."
          exit 1
        fi
        set_output tags ${_tags}
        set_output should_push ${_should_push}
      shell: bash
    -
      name: Build the Image
      id: docker_build
      uses: docker/build-push-action@v3
      with:
        tags: ${{ steps.generate_tag.outputs.tags }}
        push: true
        context: .