docker-build.yml

name: Docker build and push

# limit concurrency
# https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#examples-using-concurrency-and-the-default-behavior
concurrency: docker_mmgis_main

on:
  push:
    # Only activate for `master` branch
    branches:
      - master
      - development
    # Plus for all tags
    tags:
      - "*"

  # Plus for any pull-requests
  pull_request:
    branches:
      - master
      - development

  # And for any final releases
  release:
    types: [published]

env:
  # Will be "NASA-AMMOS/MMGIS" for the main repo, for forks "user-name-of-fork/MMGIS"
  # For generating the tag, all will be converted to lowercase
  IMAGE_SLUG: ${{ github.repository }}

jobs:
  # Push image to GitHub Container Registry.
  # The image tag pattern is:
  # for pull-requests: <PATCH_VERSION>-<DATE>-<PR_NUMBER>, eg: 1.35.2-20210125-25
  # for tags: <TAG>
  # for `master` branch: latest,<PATCH_VERSION>-latest,<MINOR_VERSION>-latest,<MAJOR_VERSION>-latest,<PATCH_VERSION>-<DATE>-<SHA>
  # for `development` branch: development,<MAJOR_VERSION>-development,<PATCH_VERSION>-<DATE>-<SHA>
  # for releases: release,<PATCH_VERSION>-release,<MINOR_VERSION>-release,<MAJOR_VERSION>-release,<PATCH_VERSION>-<DATE>-<SHA>
  # Version is parsed from package.json
  push:
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event_name == 'pull_request' || github.event_name == 'release'
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Generate tags
        id: generate
        run: |

          # Image ID
          IMAGE_ID=ghcr.io/$IMAGE_SLUG

          # Date
          BDATE=$(date +%Y%m%d)

          # PATCH_VERSION from package.json is like "1.2.3"
          # MINOR_VERSION like "1.2", MAJOR_VERSION like "1"
          PATCH_VERSION=$(jq .version -r ./package.json)
          MINOR_VERSION=${PATCH_VERSION%.*}
          MAJOR_VERSION=${MINOR_VERSION%.*}

          # Change all uppercase to lowercase, just in case
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')

          # Strip git ref prefix from version and use it as suffix for version
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')

          # For pull requests just extract the PR number
          PR_NUMBER=""
          [ "${{ github.event_name }}" == "pull_request" ] && VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\)/merge,\1,')
          [ "${{ github.event_name }}" == "pull_request" ] && PR_NUMBER=$VERSION

          # Append version
          [ "${{ github.event_name }}" == "pull_request" ] && VERSION=$PATCH_VERSION-$BDATE-$VERSION

          # Strip "v" prefix from tag name if it's a tag
          # [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')

          # Use Docker `latest` tag convention if it's a master branch build
          [ "$VERSION" == "master" ] && VERSION=latest
          [ "$VERSION" == "development" ] && VERSION=development
          [ "${{ github.event_name }}" == "release" ] && VERSION=release

          # Compose REGISTRY_TAGS variable
          REGISTRY_TAGS="-t $IMAGE_ID:$VERSION"

          # For master branch also supply an extra tag: <PATCH_VERSION>-latest,<MINOR_VERSION>-latest,<MAJOR_VERSION>-latest,<PATCH_VERSION>-<DATE>-<SHA>
          [ "$VERSION" == "latest" ] && REGISTRY_TAGS="$REGISTRY_TAGS -t $IMAGE_ID:$PATCH_VERSION-latest -t $IMAGE_ID:$MINOR_VERSION-latest -t $IMAGE_ID:$MAJOR_VERSION-latest -t $IMAGE_ID:$PATCH_VERSION-$BDATE-$(git rev-parse --short HEAD)"
          [ "$VERSION" == "development" ] && REGISTRY_TAGS="$REGISTRY_TAGS -t $IMAGE_ID:$MAJOR_VERSION-development -t $IMAGE_ID:$PATCH_VERSION-$BDATE-$(git rev-parse --short HEAD)"
          [ "$VERSION" == "release" ] && REGISTRY_TAGS="$REGISTRY_TAGS -t $IMAGE_ID:$PATCH_VERSION-release -t $IMAGE_ID:$MINOR_VERSION-release -t $IMAGE_ID:$MAJOR_VERSION-release -t $IMAGE_ID:$PATCH_VERSION-$BDATE-$(git rev-parse --short HEAD)"

          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION
          echo REGISTRY_TAGS=$REGISTRY_TAGS
          echo headref=${{ github.head_ref }}

          SHA_SHORT=${{ github.sha }}
          [ "${{ github.event_name }}" == "pull_request" ] && SHA_SHORT=$(echo ${{ github.event.pull_request.head.sha }} | cut -c1-8)

          echo "Final image tag to be pushed:"
          echo $REGISTRY_TAGS
          echo "REGISTRY_TAGS=$REGISTRY_TAGS" >> $GITHUB_OUTPUT
          echo "IMAGE_ID=$IMAGE_ID" >> $GITHUB_OUTPUT
          echo "REGISTRY_TAGS_VERSION=$VERSION" >> $GITHUB_OUTPUT
          echo "REGISTRY_TAGS_PR_NUMBER=$PR_NUMBER" >> $GITHUB_OUTPUT
          echo "SHA_SHORT=$SHA_SHORT" >> $GITHUB_OUTPUT

      - name: Login to GHCR
        run: echo ${{ secrets.GITHUB_TOKEN }} | docker login -u ${{ github.actor }} --password-stdin ghcr.io

      - name: Docker build
        run: docker build ${{ steps.generate.outputs.REGISTRY_TAGS }} .

      - name: Docker push
        run: docker push ${{ steps.generate.outputs.IMAGE_ID }} --all-tags