docker.build-push.yaml

name: docker.build-push
# This workflow is triggered on pushes to the repository.

on:
  push:
    paths:
      - .github/**
      - app/**
      - Dockerfile
      - entrypoint.sh
  workflow_dispatch:
    inputs:
      push:
        description: Push to Docker Hub registry
        required: true
        default: false
        type: boolean

env:
  WORKSPACE: ./
  DOCKER_REPO: cloudkats
  DOCKER_IMAGE: hello-world-rest

jobs:
  buildonpush:
    name: BuildOnPush
    runs-on: ubuntu-latest
    if: >-
      github.event_name == 'workflow_dispatch' && github.event.inputs.push == 'true'
      || github.event_name == 'push' && (github.event.created == false && github.event.forced == false)
    steps:
      - uses: actions/checkout@v3

      - name: login to registry
        run: |
          echo "${DOCKER_PASSWORD}" | docker login -u ${DOCKER_USERNAME} --password-stdin
        env:
          DOCKER_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
          DOCKER_PASSWORD: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: prepare
        id: prep
        working-directory: ${{ env.WORKSPACE }}
        run: |
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
          IMAGE_ID="${DOCKER_REPO}/${DOCKER_IMAGE}"

          echo "::set-output name=ACTION_RUN_URL::https://github.com/${{github.repository}}/actions/runs/${{github.run_id}}"
          echo "::set-output name=ACTION_WORKFLOW_URL::https://github.com/${{github.repository}}/actions/workflows/${{github.action}}.yml"

          echo ::set-output name=version::${VERSION}
          echo ::set-output name=tag_date::$(date -u +'%Y-%m')
          echo ::set-output name=sha::${GITHUB_SHA::8}
          echo ::set-output name=image_id::${IMAGE_ID}

      - name: build & push docker image
        working-directory: ${{ env.WORKSPACE }}
        env:
          IMAGE_ID: ${{ steps.prep.outputs.image_id }}
          IMAGE: ${{ env.DOCKER_IMAGE }}
          TAG_VERSION_DATE: ${{ steps.prep.outputs.tag_date }}
          TAG_VERSION_SHA: ${{ steps.prep.outputs.sha }}
          TAG_VERSION: ${{ steps.prep.outputs.version }}
          CREATED: ${{ steps.prep.outputs.tag_date }}
          BUILD_URL: ${{ steps.prep.outputs.action_run_url }}
          IMAGE_VERSION: ${{ steps.prep.outputs.sha }}
        run: |
          ./bin/build.sh
          ./bin/push.sh

      - name: docker hub description
        uses: peter-evans/dockerhub-description@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}
          repository: ${{ env.DOCKER_REPO }}/${{ env.DOCKER_IMAGE }}
          readme-filepath: README.md
          short-description: "Docker image hello world rest application"

  build-on-merge-request:
    name: build-on-merge-request
    runs-on: ubuntu-latest
    if: >-
      github.event_name == 'workflow_dispatch' && github.event.inputs.push == 'false'
      || github.event_name == 'push' && (github.event.created == true || github.event.forced == true)
    steps:
      - uses: actions/checkout@v3

      - uses: brpaz/hadolint-action@v1.5.0
        env:
          XDG_CONFIG_HOME: .github/hadolint.yaml
        with:
          dockerfile: ./Dockerfile

      - name: prepare
        id: prep
        run: |
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')

          IMAGE_ID="${DOCKER_REPO}/${DOCKER_IMAGE}"
          echo "::set-output name=ACTION_RUN_URL::https://github.com/${{github.repository}}/actions/runs/${{github.run_id}}"
          echo "::set-output name=ACTION_WORKFLOW_URL::https://github.com/${{github.repository}}/actions/workflows/${{github.action}}.yml"

          echo ::set-output name=version::${VERSION}
          echo ::set-output name=tag_date::$(date -u +'%Y-%m')
          echo ::set-output name=sha::${GITHUB_SHA::8}
          echo ::set-output name=image_id::${IMAGE_ID}

      - name: build
        working-directory: ${{ env.WORKSPACE }}
        env:
          IMAGE_ID: ${{ steps.prep.outputs.image_id }}
          IMAGE: ${{ env.DOCKER_IMAGE }}
          TAG_VERSION_DATE: ${{ steps.prep.outputs.tag_date }}
          TAG_VERSION_SHA: ${{ steps.prep.outputs.sha }}
          TAG_VERSION: ${{ steps.prep.outputs.version }}
          CREATED: ${{ steps.prep.outputs.tag_date }}
          BUILD_URL: ${{ steps.prep.outputs.action_run_url }}
          IMAGE_VERSION: ${{ steps.prep.outputs.version }}
        run: |
          ./bin/build.sh