push-workflow-serve.yaml

name: Build docs server

env:
  PUSH_TARGET_IMG: ghcr.io/kingdonb/sites/workflow # assumed to be on GHCR, ambient credentials are used
  PUSH_TARGET_TAG: serve # Configure what tag will push

on:
  push:
    paths: [ Dockerfile, _scripts/flux-pull.sh ]
    branches: [ main ] # Configure the branchs which you want to run this workflow

jobs:
  build-push:
    name: "Build & Push docs server"
    runs-on: ubuntu-latest

    steps:

    # Checkout source code
    - name: Checkout
      uses: actions/checkout@v3

    - name: Login to GHCR
      uses: docker/login-action@v2
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    # Make server with latest published artifact
    # FIXME: this will always/occasionally pick up the "last" image published
    # so you may need to push twice to publish a change, unless this is fixed
    - name: Docker build and push
      run: |
        SITE=${PUSH_TARGET_IMG}:${PUSH_TARGET_TAG}
        docker build -t ${SITE} .
        docker push ${SITE}