ghcr.yml

# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

name: Create and publish image to GitHub Container Registry

on:
  push:
    branches:
      - main

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: synop2bufr

jobs:
  # Push image to GitHub Packages.
  # See also https://docs.docker.com/docker-hub/builds/
  push:
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read

    steps:
      - uses: actions/checkout@v2

      - name: Build image
        run: docker build . --file Dockerfile --tag $IMAGE_NAME --label "runnumber=${GITHUB_RUN_ID}"

      - name: Log in to registry
        # This is where you will update the PAT to GHCR_BUILD_TOKEN
        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.repository_owner }} --password-stdin

      - name: Rename image for publication
        run: |
          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME

          # Change all uppercase to lowercase
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
          # Strip git ref prefix from version
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
          # Strip "v" prefix from tag name
          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
          # Use Docker `latest` tag convention
          [ "$VERSION" == "main" ] && VERSION=latest
          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION
          echo FULLCONTAINERNAME=$IMAGE_ID:$VERSION >> $GITHUB_ENV
          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION

      - name: Push to CR
        run: docker push ${{ env.FULLCONTAINERNAME }}