build-and-push.yaml

name: Build and push container image
# try to follow the example here:  https://gist.github.com/Daniel-ltw/552b90800b07c22e4a83dfa68ada6318
on:
  push:
    branches:
      - main

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    env:
      DOCKER_CONFIG: $HOME/.docker
      HUB: ${{ vars.HUB }}
      IMAGE: ${{ vars.IMAGE }}
    outputs:
      image-tag: ${{ steps.build-and-push.outputs.IMAGE_SHA_TAG }}

    steps:
      - name: cleanup disk space
        run: |
          sudo rm -rf /usr/local/lib/android /usr/share/dotnet /opt/ghc
          df -h

      - name: Display the image and hub names
        run: |
          echo "$IMAGE"
          echo "$HUB"

      - name: Check out the repo
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # OR "2" -> To retrieve the preceding commit.

      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v44
        with:
          files_ignore: |
            .github/**
            images/**

      - name: Log in to GAR
        if: steps.changed-files.outputs.any_changed == 'true'
        uses: docker/login-action@v1
        with:
          registry: us-central1-docker.pkg.dev
          username: _json_key
          password: ${{ secrets.GAR_SECRET_KEY }}

      - name: Build the image and push to artifact registry
        id: build-and-push
        if: steps.changed-files.outputs.any_changed == 'true'
        uses: jupyterhub/repo2docker-action@master
        with:
          # Make sure username & password/token pair matches your registry credentials
          DOCKER_REGISTRY: us-central1-docker.pkg.dev
          IMAGE_NAME: ucb-datahub-2018/user-images/logodev-user-image
          # Disable pushing a 'latest' tag, as this often just causes confusion
          LATEST_TAG_OFF: true
          # Put repo contents in /srv/repo, rather than the default (/home/jovyan). The home directory
          # is mounted over by persistent storage when we are using the built image in a JupyterHub, and
          # so all contents put in /home/jovyan are lost. This particularly prevents any 'start' script from
          # working, as it is needed in runtime.
          REPO_DIR: /srv/repo

      - name: print the image tag
        run: |
          echo ${{ steps.build-and-push.outputs.IMAGE_SHA_TAG }}

      - name: store the image tag as an env var
        run: |
          IMAGE_TAG=${{ steps.build-and-push.outputs.IMAGE_SHA_TAG }}
          echo "IMAGE_TAG=$IMAGE_TAG" >> $GITHUB_ENV

      # Lets us monitor disks getting full as images get bigger over time
      - name: Show how much disk space is left
        run: df -h

  create-pr:
    runs-on: ubuntu-latest
    needs: build-and-push
    steps:
      - name: print the hash
        run: |
          echo $IMAGE_TAG
          echo ${{ needs.build-and-push.outputs.image-tag }}
          echo "IMAGE_TAG=${{ needs.build-and-push.outputs.image-tag }}" >> $GITHUB_ENV

      - name: logic test
        run: |
          if [ -z "$IMAGE_TAG" ]; then
            echo "CREATE_PR=false" >> $GITHUB_ENV
          else
            echo "CREATE_PR=true" >> $GITHUB_ENV
          fi

      - name: Checkout files in repo
        uses: actions/checkout@v4
        with:
          repository: 'berkeley-dsep-infra/datahub'
          sparse-checkout: |
            hub/
            deployments/${HUB}

      - name: see if the correct dir has been checked out, and the requirements have been installed
        run: |
          ls -la
          tree