docker.yml

name: Create and publish a Docker image

on:
  push:
    branches: ['dev']
  workflow_dispatch:
    inputs:
      tag:
        description: 'Tag for the Docker image'
        required: true

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  display-image-name:
    runs-on: ubuntu-latest
    steps:
      - name: Display IMAGE_NAME
        run: echo "IMAGE_NAME is ${{ env.IMAGE_NAME }}"
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Get short commit hash and determine branch name
        id: set-env-vars
        run: |
          # Get short commit hash
          echo "SHORT_COMMIT_HASH=$(git rev-parse --short HEAD)" >> $GITHUB_ENV

          # Determine branch name
          if [ "${{ github.event_name }}" == "pull_request" ]; then
            echo "BRANCH_NAME=${{ github.head_ref }}" >> $GITHUB_ENV  # Source branch of the PR
          else
            echo "BRANCH_NAME=${{ github.ref_name }}" >> $GITHUB_ENV  # Actual branch name for push events
          fi
      - name: Set Docker image tag
        id: set-docker-tag
        run: |
          if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
            echo "DOCKER_TAG=${{ github.event.inputs.tag }}" >> $GITHUB_ENV
          else
            echo "DOCKER_TAG=${{ env.BRANCH_NAME }}-${{ env.SHORT_COMMIT_HASH }}" >> $GITHUB_ENV
          fi
      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile
          push: true
          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.DOCKER_TAG }}
          labels: |
            version=${{ env.SHORT_COMMIT_HASH }}
            branch=${{ env.BRANCH_NAME }}
      - name: Generate artifact attestation
        uses: actions/attest-build-provenance@v1
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true