docker.yml

name: Build and Push Docker Image

on:
  push:
    branches:
      - main  # Trigger on pushes to the main branch

jobs:
  build_and_push:
    runs-on: ubuntu-latest

    steps:
      # This step is a workaround for an issue whereby github artifacts expects repositories to have only lower case names
      # See https://github.com/docker/build-push-action/issues/37
      - name: PrepareReg Names
        run: |
          echo IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
          echo IMAGE_TAG=$(echo ${{ github.ref }} | tr '[:upper:]' '[:lower:]' | awk '{split($0,a,"/"); print a[3]}') >> $GITHUB_ENV

      - name: Checkout code
        uses: actions/checkout@v3

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

      - name: Build and push with commit SHA tag
        uses: docker/build-push-action@v3
        with:
          context: .
          push: true
          tags: ghcr.io/${{ env.IMAGE_REPOSITORY }}:latest, ghcr.io/${{ env.IMAGE_REPOSITORY }}:${{ github.sha }}