build-docker.yml

name: Build and Push Docker Image

on:
  push:
    branches:
      - main

# Ensure only the most recent workflow runs.
concurrency:
  group: von-network
  cancel-in-progress: true

jobs:
  push_to_registry:
    # Ensure this only runs on the main repository so we're not publishing images to other repositories.
    if: ${{ github.event.repository.full_name == 'bcgov/von-network' }}

    name: Push Docker image to GitHub Packages
    runs-on: ubuntu-latest
    steps:
      - name: Check out the repo
        uses: actions/checkout@v4

      - name: Lowercase repo owner
        id: lowercase_repo_owner
        uses: ASzc/change-string-case-action@v6
        with:
          string: ${{ github.repository_owner }}

      - name: Prepare labels and tags
        id: prep
        run: |
          DOCKER_IMAGE=ghcr.io/${{ steps.lowercase_repo_owner.outputs.lowercase }}/von-network-base
          VERSION=edge
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            VERSION=${GITHUB_REF#refs/tags/}
          elif [[ $GITHUB_REF == refs/heads/* ]]; then
            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
          elif [[ $GITHUB_REF == refs/pull/* ]]; then
            VERSION=pr-${{ github.event.number }}
          fi
          TAGS="${DOCKER_IMAGE}:${VERSION}"
          if [ "${{ github.event_name }}" = "push" ]; then
            TAGS="$TAGS,${DOCKER_IMAGE}:sha-${GITHUB_SHA::8}"
          fi
          # Always include 'latest' tag.
          TAGS="$TAGS,${DOCKER_IMAGE}:latest"
          echo ::set-output name=version::${VERSION}
          echo ::set-output name=tags::${TAGS}
          echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build and push von-network image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.prep.outputs.tags }}
          labels: |
            org.opencontainers.image.source=${{ github.event.repository.html_url }}
            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
            org.opencontainers.image.revision=${{ github.sha }}