docker-image.yml

name: Docker Image CI

on:
  push:
    branches: [main]
    tags: [v*]
  pull_request:
    branches: [main]

jobs:
  docker-image-build:
    if: startsWith(github.ref, 'refs/tags/')
    runs-on: ubuntu-latest
    steps:
      - name: Check Out Repo
        uses: actions/checkout@v3

      - name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Set lowercase GitHub owner name
        run: |
          echo "OWNER_LC=${OWNER,,}" >> ${GITHUB_ENV}
        env:
          OWNER: "${{ github.repository_owner }}"

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ env.OWNER_LC }}
          password: ${{ secrets.GH_TOKEN }}

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v2

      - name: Set lowercase GitHub repository name
        run: |
          echo "REPOSITORY_LC=${REPOSITORY,,}" >> ${GITHUB_ENV}
        env:
          REPOSITORY: "${{ github.repository }}"

      - name: Set correct DockerHub repository name
        run: |
          echo "DOCKERHUB_REPOSITORY_LC=${DOCKERHUB_USERNAME,,}/${REPOSITORY#*/}" >> ${GITHUB_ENV}
        env:
          DOCKERHUB_USERNAME: "${{ secrets.DOCKER_HUB_USERNAME}}"
          REPOSITORY: "${{ github.repository }}"

      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v4
        with:
          context: ./
          file: ./Dockerfile
          push: true
          tags: |
            ${{ env.DOCKERHUB_REPOSITORY_LC }}:${{  github.ref_name }}
            ghcr.io/${{ env.REPOSITORY_LC }}:${{  github.ref_name }}

      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}