build-custom-image.yaml

name: Build and push image to DockerHub and GitHub Container Registry

on:
  push:
    tags:
      - 'v*'
  workflow_dispatch:
    inputs:
      manual-tag:
        description: 'Manual Tag'
        required: true
        default: 'main'
        type: string
      ghost_version:
        description: 'Ghost version'
        required: true
        default: '5.66.0'
        type: string

jobs:
  docker:
    runs-on: ubuntu-latest

    steps:
      -
        name: Checkout
        uses: actions/checkout@v4
      -
        name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          driver-opts: |
            network=host
            image=moby/buildkit:master

      - 
        name: Set up GHOST_VERSION and MANUAL_TAG values, depending on event type (push or workflow_dispatch)
        id: versions
        env:
          GITHUB_EVENT_NAME: ${{ github.event_name }}
        run: |
          if [ ${{ env.GITHUB_EVENT_NAME  }} == workflow_dispatch ]; then
            echo "GHOST_VERSION=${{ github.event.inputs.ghost_version }}" >> $GITHUB_OUTPUT
            echo "MANUAL_TAG=${{ github.event.inputs.manual-tag }}" >> $GITHUB_OUTPUT
          else
            echo "GHOST_VERSION=$(curl -s https://api.github.com/repos/tryghost/ghost/releases/latest | jq '.name' | sed 's/\"//g')" >> $GITHUB_OUTPUT
            echo "MANUAL_TAG=main" >> $GITHUB_OUTPUT
          fi

      - name: Show GHOST_VERSION
        run: |
          echo ${{ steps.versions.outputs.GHOST_VERSION }}
      -
        name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            docker.io/${{ secrets.DOCKER_USER }}/${{ github.event.repository.name }}
            ghcr.io/${{ github.repository }}
          tags: |
            type=ref,event=branch
            type=ref,event=tag
            type=raw,value=${{ steps.versions.outputs.MANUAL_TAG }}
            type=raw,value=latest
          labels: |
            org.opencontainers.image.title=ghost-on-kubernetes
            org.opencontainers.image.description=Ghost CMS upstream v5 with node 18-bookworm and gosu
            org.opencontainers.image.vendor=https://sredevops.org
            org.opencontainers.image.source=https://github.com/sredevopsdev/ghost-on-kubernetes
            org.opencontainers.image.documentation=https://github.com/sredevopsdev/ghost-on-kubernetes/blob/main/README.md
      -
        name: Login to DockerHub
        uses: docker/login-action@v3
        with:
          registry: docker.io
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_PASS }}
      -
        name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      -
        name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: linux/amd64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}          
          build-args: |
            GHOST_VERSION=${{ steps.versions.outputs.GHOST_VERSION }}