build-docker-image.yaml

name: Build docker image

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

jobs:
  build-docker-image:
    name: Build docker image
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: "⛛ downcase GITHUB_REPOSITORY"
        run: |
          echo "GITHUB_REPOSITORY=${GITHUB_REPOSITORY,,}" >>${GITHUB_ENV}
      - name: Build docker image
        run: |
          if [[ ${{ github.ref }} == 'refs/heads/master' ]]; then
            tag=latest
          else
            tag=${{ github.sha }}
          fi

          image="ghcr.io/${{ env.GITHUB_REPOSITORY }}:${tag}"

          docker build -t "${image}" .
          docker push "${image}"