publish-docker.yml

# Workflow inspired by https://docs.github.com/en/actions/publishing-packages/publishing-docker-images

# This is currently somewhat redundant with the docker stuff in e2e-tests-suite.yml
# This one is nice because it publishes the docker image to a registry so that students can
# easily download it to their local systems or their servers. Ideally those e2e tests would be able
# to use this same docker container somehow.

name: Create and publish a Docker image

on:
  push:
    branches:
      - main
      # TODO this is just for testing
      - joshy-publish-docker-image
    tags:
      - '**'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push-node-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Log in to the Container registry
        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Build and push Docker image
        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
        with:
          context: .
          file: ./docker/Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}