Promote docker image

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It's 100% Open Source and licensed under the APACHE2.

Promote Docker image to specific tags provided explicitly or implicitly with Docker Metadata action

  name: Release
  on:
    release:
      types: [published]
  
  permissions:
    id-token: write
    contents: write
  
  jobs:
    promote:
      runs-on: ubuntu-latest
      steps:
        - name: Docker image promote
          uses: cloudposse/github-action-docker-promote@main
          id: promote
          with:
            registry: registry.hub.docker.com
            organization: ${{ github.event.repository.owner.login }}
            repository: ${{ github.event.repository.name }}
            login: ${{ secrets.DOCKERHUB_USERNAME }}
            password: ${{ secrets.DOCKERHUB_PASSWORD }}
            from: sha-${{ github.sha }}
            to: ${{ github.event.release.tag_name }}
            use_metadata: false

      outputs:
        image: ${{ steps.promote.outputs.image }}
        tag: ${{ steps.promote.outputs.tag }}  

Promote action use Docker Metadata action under the hood and can detect to tags based on Git reference and GitHub events.

  name: Pull Request
  on:
    pull_request:
      branches: [ 'main' ]
      types: [opened, synchronize, reopened, closed, labeled, unlabeled]

  jobs:
    context:
      runs-on: ubuntu-latest
      steps:

        - name: Checkout
          uses: actions/checkout@v3
          with:
            fetch-depth: 2

        - name: Get previous commit
          id: prev-commit
          run: echo "sha=$(git rev-parse --verify HEAD^1)" >> $GITHUB_OUTPUT

        - name: Docker image promote
          uses: cloudposse/github-action-docker-promote@main
          id: promote
          with:
            registry: registry.hub.docker.com
            organization: ${{ github.event.repository.owner.login }}
            repository: ${{ github.event.repository.name }}
            login: ${{ secrets.DOCKERHUB_USERNAME }}
            password: ${{ secrets.DOCKERHUB_PASSWORD }}
            from: sha-${{ steps.prev-commit.outputs.sha }}
            use_metadata: true

      outputs:
        image: ${{ steps.promote.outputs.image }}
        tag: ${{ steps.promote.outputs.tag }}  

If you skip from tag then it would be populated as SHA of the current commit in long format.

  name: Release
  on:
    release:
      types: [published]

  permissions:
    id-token: write
    contents: write

  jobs:
    promote:
      runs-on: ubuntu-latest
      steps:
        - name: Checkout
          uses: actions/checkout@v3

        - name: Docker image promote
          uses: cloudposse/github-action-docker-promote@main
          id: promote
          with:
            registry: registry.hub.docker.com
            organization: ${{ github.event.repository.owner.login }}
            repository: ${{ github.event.repository.name }}
            login: ${{ secrets.DOCKERHUB_USERNAME }}
            password: ${{ secrets.DOCKERHUB_PASSWORD }}
            ## `from` is long SHA
            to: ${{ github.event.release.tag_name }}
            use_metadata: true

      outputs:
        image: ${{ steps.promote.outputs.image }}
        tag: ${{ steps.promote.outputs.tag }}  

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Check out these related projects.

• github-action-docker-build-push - Build Docker image and push it
• github-action-docker-image-exists - Check if docker image exists by pulling it

For additional context, refer to some of these links.

• docker-metadata-action - GitHub Action to extract metadata from Git reference and GitHub events.
• github-actions-workflows - Reusable workflows for different types of projects
• example-github-action-release-workflow - Example application with complicated release workflow

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