build_and_upload_docker_image_on_push.yaml

name: Build & Upload Fairspace-Jupyter Docker image

env:
  DOCKER_REGISTRY: ghcr.io

on:
  push:
    branches:
      - dev
      - release
      - devops/FAIRSPC-57_github_actions

jobs:
  build-and-upload-jupyterhub:
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@v4

      - name: Get version tag for artifact
        run: |
          BRANCH=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}
          echo "Building images from the branch: $BRANCH"
          VER=$(cat .projects/jupyterhub-hub/VERSION)
          echo "Building images of version: $VER"
          if [ $BRANCH != "release" ]
          then
            VER=$VER-SNAPSHOT
          fi
          echo "fairspace_version=$VER" >> $GITHUB_ENV

      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.DOCKER_REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.DOCKER_REGISTRY }}/fairspace/jupyterhub-hub

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: ./projects/jupyterhub-hub/
          push: true
          tags: ${{ env.DOCKER_REGISTRY }}/${{ github.repository }}/jupyterhub-hub:${{ env.VERSION }}
          labels: ${{ steps.meta.outputs.labels }}