action.yaml

name: "push-to-niployments"
description: |
  Push a versioned image, built from this project, to NIployments' Image Registry

inputs:
  project_name:
    description: |
      The name of the project under which to store the generated image artifact.
    required: false
    default: niaefeup
  repository_name:
    description: |
      The name of the repository, stored under "project_name", to which the new image artifact should be pushed
    required: false
  docker_dockerfile:
    description: |
      The name of the Dockerfile used to build this image.
    required: false
    default: "Dockerfile-prod"
  docker_context:
    description: |
      The path to the directory containing the Dockerfile used to build the project.
    required: false
  docker_target:
    description: |
      Sets the target stage to build
    required: false
  docker_build_args:
    description: |
      List of build-time variables
    required: false

  # Due to limitations in composite runners, this is, in my opinion, the best way to do this.
  # See https://github.com/orgs/community/discussions/49689 for more details.
  # TLDR: apparently the 'vars' and the 'secrets' contexts are not available to composite runners.
  NIPLOYMENTS_REGISTRY_URL:
    description: |
      The URL of the NIployments' Image Registry
    required: true
  NIPLOYMENTS_REGISTRY_USERNAME:
    description: |
      The username used to authenticate with the NIployments' Image Registry
    required: true
  NIPLOYMENTS_REGISTRY_PASSWORD:
    description: |
      The password used to authenticate with the NIployments' Image Registry
    required: true

runs:
  using: "composite"
  steps:
    - name: "Parse repository name"
      id: "name-parsing"
      run: ${{ github.action_path }}/scripts/get-repository-name.sh
      shell: bash
      env:
        GITHUB_REPOSITORY_NAME: ${{ github.event.repository.name }}
        INPUT_REPOSITORY_NAME: ${{ inputs.repository_name }}

    - name: Login to NIployments registry
      uses: docker/login-action@v1
      with:
        # These are the values of the Dev cluster.
        registry: ${{ inputs.NIPLOYMENTS_REGISTRY_URL }}
        username: ${{ inputs.NIPLOYMENTS_REGISTRY_USERNAME }}
        password: ${{ inputs.NIPLOYMENTS_REGISTRY_PASSWORD }}

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3

    - name: Checkout
      uses: actions/checkout@v4

    - name: Generate new tag for project image
      id: tag
      uses: docker/metadata-action@v5
      with:
        images: ${{ inputs.NIPLOYMENTS_REGISTRY_URL }}/${{ inputs.project_name }}/${{ steps.name-parsing.outputs.REPOSITORY_NAME }}
        tags: |
          type=ref,event=branch
          type=ref,event=pr
          type=semver,pattern={{version}}
          type=semver,pattern={{major}}.{{minor}}

    - name: "Parse Docker context and Dockerfile"
      id: "docker-parsing"
      run: ${{ github.action_path }}/scripts/parse-docker-context-and-dockerfile.sh
      shell: bash
      env:
        INPUT_DOCKER_CONTEXT: ${{ inputs.docker_context }}
        INPUT_DOCKER_DOCKERFILE: ${{ inputs.docker_dockerfile }}

    - name: Build and push
      uses: docker/build-push-action@v5
      with:
        push: true
        context: ${{ steps.docker-parsing.outputs.DOCKER_CONTEXT }}
        file: ${{ steps.docker-parsing.outputs.DOCKER_DOCKERFILE }}
        tags: ${{ steps.tag.outputs.tags }}
        labels: ${{ steps.tag.outputs.labels }}
        target: ${{ inputs.docker_target }}
        build-args: ${{ inputs.docker_build_args }}